BBQ Weather — What to Check Before You Fire Up

Ideal BBQ conditions at a glance

Wind guide for BBQs

Wind is the BBQ host's biggest weather enemy — more so than a light shower. It affects flame stability, charcoal temperature control, ember safety and guest comfort. The type of grill you are using matters too.

Charcoal and wind

Charcoal grills are significantly more affected by wind than gas grills. Wind blowing into the vents can cause the temperature to spike unexpectedly, charring food quickly on the outside while leaving it raw inside. Turn the bottom vent to face away from the wind. Use a lid to retain heat. Be especially careful about embers — always place the grill on a hard, non-combustible surface with nothing flammable nearby.

Gas and wind

Gas grills are more stable in wind, but above 20 mph you may notice uneven burner performance as wind disrupts the flame. Modern gas grills with enclosed burner systems cope better than older open-flame designs. A simple cloth or tarpaulin windbreak on the upwind side (well clear of the grill itself) can transform conditions at moderate wind speeds.

Flame safety

Never use any BBQ grill inside, in a tent, in a caravan or in a garage — even with the door open. Carbon monoxide from charcoal builds to dangerous levels within minutes in an enclosed space. If the weather turns and you need to move the grill, wait until it has fully cooled before moving it under any kind of cover.

Temperature guide for a BBQ

The temperature threshold for a successful BBQ is as much about guest comfort as it is about cooking. Standing around a hot grill is fine at almost any temperature — but sitting eating outdoors is a different matter.

Cooking times in cool weather

In cooler temperatures (below 15°C), charcoal takes longer to reach cooking temperature — allow an extra 10–15 minutes for the coals to be ready. Food also takes slightly longer to cook, as cold air draws heat away from the grill more quickly. A lid makes a significant difference: it retains heat and reduces cooking time. A meat thermometer is your best friend in variable conditions — never rely on time alone.

Planning around rain

Rain is the event that ends most BBQs. The key is not to check whether it will rain, but to understand the probability and the timing.

Reading rain probability

A rain probability of 20% or below means the most likely outcome is dry. At 40–50%, there is a coin-flip chance of a shower — worth having a gazebo up. At 60–70% and above, expect rain at some point and make sure you have a proper indoor backup. The daily rain total (in mm) tells you how heavy it will be — 2 mm spread over a day might be a quick light shower, not a washout.

Shower windows vs sustained rain

Many forecast days show some rain probability, but the rain is often confined to a window of 1–2 hours. Checking the hourly forecast is far more useful than looking at the day summary. A shower at 2pm followed by a dry evening is a perfectly good BBQ day if you plan to start at 4pm. WeatherForIt identifies the best time window in the day, not just whether rain is possible at any point.

Cover options

A well-pegged gazebo extends the BBQ season considerably — it protects from both light rain and strong sun, and gives guests a defined gathering point. Make sure it is properly weighted or anchored, especially in any wind. An outdoor patio umbrella protects the table but not the grill — and can become dangerous in wind above 20 mph if not weighted correctly.

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