Wet Weather Planning for Outdoor Events in Australia

Every outdoor event in Australia is a bet on the weather. Markets, fetes, festivals and show days all commit money weeks in advance — marquee deposits, site fees, performer contracts, stock — against a forecast nobody can guarantee. Storm season across most of the country runs from November through March, and the Bureau of Meteorology can issue a severe weather warning with only a few hours of lead time.

The organisers who come through a wet weekend with their finances and their reputation intact are not luckier than the rest. They have a written wet weather plan with named decision-makers, measurable trigger points, and vendor communication that happens before anyone has to ask. This guide sets out how to build one for an Australian outdoor event.

Why "we'll decide on the day" is the most expensive plan

Deferring the decision feels flexible. In practice it transfers the entire cost of the weather onto the people with the least capacity to absorb it — your stallholders.

A food vendor who has prepped 300 servings, paid staff for a full day and driven two hours to your site cannot recover that money on a Thursday morning phone call. A maker who has packed a trailer of stock and paid a casual to help loses a day of wages. When you cancel late, you do not just lose one event day: you lose the vendor goodwill that fills your next event. Word travels through stallholder Facebook groups faster than any of your marketing.

A plan changes the shape of that conversation. Instead of an argument about who is responsible, you have a published set of conditions and a decision time that everyone agreed to when they booked.

Build four decision tiers instead of one cancellation call

Most wet weather failures happen because organisers only have two mental settings: run it, or cancel it. Real events sit in between. Define four tiers, publish them with your vendor pack, and name the tier in every update you send.

Green — the event runs as planned

No active warnings, forecast rain under your threshold, ground firm. Normal operations, standard vendor call times. Your only job is to keep monitoring the radar.

Amber — the event runs with changes

This is the tier that saves events. Amber covers a wide range of adaptations: consolidating stalls onto hardstand instead of turf, shortening the trading day, moving the stage away from a low corner, adding side walls to marquees, delaying the opening by two hours to let a band of rain pass, or dropping the outdoor cinema screening and keeping the food vendors.

Write your Amber options down in advance. Deciding under pressure at 6am with forty vendors messaging you is how bad calls get made.

Red — delayed start, shortened program, or partial cancellation

Red means part of the event cannot safely proceed. You might hold the market but cancel the stage program, or close the rides but keep the food area trading. Red decisions should require sign-off from two named people — usually the event manager and the safety lead — so nobody carries the call alone.

Black — cancel or postpone

Black is reserved for genuine safety risk: a severe weather warning for destructive winds, a flood warning covering your site, a total fire ban combined with a storm forecast, or a lightning storm that will not clear. Black is a safety decision, never a comfort decision. Say that plainly in your policy so vendors understand the standard you are applying.

Set trigger points you can actually measure

A trigger point is a number, not a feeling. Publish the numbers, then check them at fixed times. Useful thresholds to define for your site:

• Forecast rain during the event window. Decide what your event can tolerate — a market with covered stalls may handle 5mm over the trading day; a bare-ground car show may not handle 2mm.
• Rain in the 24 hours before opening. This is the number that decides whether your ground is trafficable, and it is more predictive than the event-day forecast.
• Wind gusts. Marquees, flags, signage and inflatables all have limits. Ask your hire company for the engineered wind rating of the structures you are using and write the gust threshold into the plan. Traditional pegged marquees and weighted frame marquees fail at different points, and a pegged marquee on hardstand cannot be anchored properly at all.
• BOM warning level. A severe weather warning, severe thunderstorm warning or flood warning covering your local government area is an automatic Amber review at minimum. Minor, moderate and major flood classifications escalate accordingly.
• Lightning within your radius. Pick a distance you can monitor — 10km is a common working figure — and define the suspension and resumption rule.
• Ground inspection result. A person walks the site at a set time and records the condition in writing: firm, soft, water pooling, or unusable.

Set the observation schedule too. Twice the day before, then every two hours from 5am on event day is realistic for a community market. Write down who checks, where they record it, and who they escalate to when a threshold is crossed.

Site checks that decide whether you can run in rain at all

Water is not the only problem. Drainage, ground condition and electrical safety usually determine what you can actually do.

Drainage and ground condition

Walk the site in the dry and find the low points before winter. Car parks, gateways and the strips between stall rows are where water collects and where vehicles bog. If your site is a council oval or reserve, ask the council what its closure policy is for wet ground — many have an automatic closure after a set rainfall figure, and damaging a playing surface can cost you the venue for future years.

Have a mud plan: a load of woodchip or gravel at the gate, a tractor or ute on standby, and a decision about whether vehicles stay off the ground entirely. For turf sites, the single most effective wet weather measure is often a no-vehicle rule with a trolley shuttle from a hardstand drop-off.

Marquees and temporary structures

Book structures with weather in mind rather than treating them as shade. Confirm the wind rating in writing, confirm the anchoring method for your surface, and confirm whether side walls are included — a roof without walls is a wind sail and provides little protection from driving rain. Weighting is mandatory on hardstand; pegs alone are not an anchoring system. If your event needs council approval for temporary structures, that approval will usually specify the anchoring and documentation required, so keep the engineer's certificate with your site file.

Electrical safety in the wet

This is where wet weather events become genuinely dangerous. Keep all connections off the ground — cable ramps and suspended runs, never a join lying in a puddle. Use portable RCD protection on every circuit, use IP-rated equipment outdoors, and treat any water in contact with a connection as an immediate isolation. Portable generators go under cover with exhaust away from occupied areas. If your event has food vendors cooking under marquees, check that gas cylinders are outside the enclosure, that nothing is operating under a leaking roof, and that there is a clear exit path.

Toilets, waste and hand-wash

Wet weather multiplies mud tracked into toilets and turns waste areas into a mess. Increase bin servicing, add hand-wash capacity, and put down matting at toilet entries. These are small costs that prevent the kind of patron complaints that outlast the weather.

Lightning: the protocol most plans leave out

Lightning is the one hazard where the decision is not discretionary. A useful working rule: if you can hear thunder, the storm is close enough to strike your site. Suspend outdoor activity, move patrons and staff into substantial buildings or hard-topped vehicles, and stay clear of marquees, trees, flagpoles and open ground. Do not resume until 30 minutes have passed since the last thunder heard.

Give one person the authority to call a suspension and a second person the job of clearing the site. Announcing a lightning hold over a PA system is a two-sentence script: what is happening, and where to go. Write it in advance.

Tell vendors before they have to ask

Most wet weather conflict is a communication failure dressed up as a policy dispute. Fix it with three artefacts.

1. A weather section in the vendor pack

Publish your tiers, your trigger points, your decision times, your refund and credit policy, and the channel you will use. Do this at the point of booking, not the week before. Vendors plan stock against it.

2. One channel and one voice

Pick a single channel for weather updates — a broadcast group, an SMS list, or your organiser dashboard — and state that no other channel is authoritative. Rumours fill silence. Every update should name the tier, the decision time, and the next update time, even when nothing has changed. "Still Amber, next update 11am" prevents forty individual messages.

3. Decision times that respect travel

Vendors need to load and travel. A decision made two hours before gates open is worth almost nothing to someone three hours away. Set your first call the afternoon before, and your final call early enough that a vendor can still choose not to come. Publish a phone number for the person on duty.

Who pays when it rains?

Decide this before you sell a single stall, because it is the question you will be asked first.

• Publish a refund policy. State clearly what happens to stall fees if the event is cancelled by the organiser, if it is shortened, and if it proceeds in rain but trade is poor. Three scenarios, three answers, no ambiguity.
• Prefer credits where you can afford them. A credit toward the next event keeps the vendor relationship and keeps cash in your business. Offer a credit plus a partial refund for organiser-cancelled days, and be explicit that a wet day the event still runs is not a cancellation.
• Check your insurance before storm season. Ask your broker specifically what your public liability policy does and does not cover around weather, whether event cancellation cover is available for your scale of event, and what documentation a claim requires. Requirements usually include a written decision log, so keep one.
• Set a damage and cleaning bond. Wet events generate mud, damaged turf and excess waste. A modest refundable bond, described in the vendor terms, protects you without deterring good vendors.

Ticket refunds are a separate matter. Where an event is cancelled, ticket holders generally expect and are generally entitled to a refund — publish your terms before sales open so the position is clear. Australian Consumer Law does not require a refund simply because a patron changes their mind about attending in the rain, but it does not protect an organiser who takes money for an event that never happens.

What to document on the day

Keep a running log, on paper if the power is unreliable. Record each weather observation with a time, each threshold crossing, each decision, who made it, and when vendors and patrons were told. Photograph ground conditions at the gate and at the low points before and after. This log is your insurance evidence, your council defence if a surface is damaged, and the raw material for next year's plan.

Pack-down and recovery in the wet

Plan the exit as carefully as the entry. Wet pack-downs damage stock, injure people and tear up ground. Brief vendors that in wet conditions vehicles may be held off the ground, that pack-down may be staged in waves, and that the event may close trading slightly early to allow a safe, daylight departure. Have lighting available — a wet afternoon turns into a dark, dangerous pack-down quickly.

Book the site inspection for the day after. Damage assessed on the day is damage you can document; damage discovered by the council a week later is a bill with your name on it.

Review it while it is fresh

Within a week of any weather-affected event, sit down with your team and answer four questions: which triggers fired, which decisions were made and how quickly, what did vendors and patrons actually experience, and what would have been cheaper or safer. Update the plan, republish it, and note the version date. A wet weather plan that is never revised is a document, not a system.

Frequently asked questions

When should an outdoor event be cancelled for wet weather?

Cancel or postpone when a Bureau of Meteorology severe weather, severe thunderstorm or flood warning covers your site, when wind gusts exceed the engineered rating of your temporary structures, when the ground is too soft to support vehicles or foot traffic safely, or when lightning will not clear your area within a workable window. Rain alone is rarely a reason to cancel a well-prepared event — unsafe ground, unsafe structures and unsafe electrical setups are.

Does insurance cover rain cancellation in Australia?

Public liability cover generally addresses injury and property damage, not lost revenue from weather. Event cancellation cover is usually a separate product and may exclude or specially rate weather-related losses. Ask your broker directly what is covered, what evidence is required, and whether your event is eligible, well before storm season begins.

Can I run an outdoor event under marquees in heavy rain?

Yes, if the structures are rated for the wind and anchored correctly for the surface, if all electrical connections are protected and off the ground, if drainage prevents water pooling under the structure, and if side walls are fitted to stop driving rain. A roof alone is not shelter in a storm, and a marquee is not a lightning shelter — clear it during thunderstorms.

Do I have to refund stall fees if it rains?

That depends on the policy you published before taking the booking. If the organiser cancels, a refund or credit is the expected and defensible outcome. If the event proceeds in rain and trade is simply poor, most published policies treat the fee as earned — which is exactly why the policy needs to say so clearly at the time of booking.

How do I know if my site will flood?

Check the Bureau of Meteorology flood warnings for your catchment, ask your council whether the reserve has a known flood level or closure policy, and physically walk the site in heavy rain before your event season if you can. Local knowledge from long-standing vendors and council staff is usually more accurate than any map.

Run the event you can actually control

You cannot control the weather. You can control whether your vendors know the plan, whether your thresholds are written down, whether your marquees are anchored properly, and whether the decision is made early enough to matter. That is the difference between a wet weekend and a ruined season.

Evntle keeps the operational side of that plan in one place: publish tier updates to every stallholder from your organiser dashboard, manage stall allocations and site layouts so you can move vendors onto hardstand at short notice, track fees, credits and refunds against each booking, and keep your vendor contact list ready when a decision has to go out in ten minutes. Start with a free Evntle account, or try the live demo to see how stallholder communications, allocations and payments work together on event day.

Planning the season ahead? Read our summer event planning guide, check what your council approvals and event permits require for temporary structures, and make sure your event insurance is current before the first storm front arrives.