Conditions on this page are recalculated from the latest forecast every time it is opened, for the current date in the location's own time zone.
It depends on the activity. Cycling becomes dangerous above 30 km/h. Photography requires extra support above 15 km/h. Beach days are ruined above 25 km/h. Generally, sustained wind above 40 km/h is problematic for most outdoor plans. 20 km/h is a moderate breeze. You'll feel it constantly and loose items may blow around. It's fine for walking and hiking but affects cycling, dining outdoors, and photography. Most outdoor events should have a 40 km/h cancellation threshold. Tented events should lower this to 30 km/h. Inflatable structures should be deflated above 25 km/h. Running in 20–30 km/h wind is safe but frustrating. Cycling above 30 km/h headwind is dangerous due to reduced control. Trail running on exposed ridges above 40 km/h risks falls. Exact wind speed limits for every outdoor activity. When to go, when to adapt, and when to cancel — with real-world examples. 'Breezy' was 38 km/h with gusts to 55. Tent fabric tore. Centerpieces flew. Ceremony had to move indoors. Decorations budget — wasted. 'Breezy' is not a number. Always check the actual km/h forecast and gust speeds. If gusts exceed 40 km/h, any outdoor tent event is at risk. The forecast says "breezy." But what does that actually mean for your picnic? Your bike ride? Your outdoor wedding? "Breezy" could mean a pleasant 12 km/h or a table-flipping 35 km/h. Here are the exact numbers. Wind doesn't just make things blow around — it makes you colder. At 15°C with 30 km/h wind, feels-like temperature drops to about 10°C. At 5°C with the same wind, it feels like -1°C.
Scores are capped by dealbreakers — heavy rain, dangerous wind, thick fog or hazardous UV pull a day down no matter how pleasant the rest of the numbers look. Forecast data is Open-Meteo; solar and lunar values are computed for Too Windy For Outdoor Activities's own coordinates and time zone. Full details on the methodology page.