SunDay - Weather Forecast

Planning an outdoor event? SunDay gives you hyper-accurate weather forecasts and smart packing tips for any future date. Download now to secure your sunshine!

Ever planned a beach day only to get absolutely destroyed by a thunderstorm? Ever planned a hike only to realise you forgot suncream and a cap? Yeah, us too. That's why we built SunDay.

SunDay is the weather event planner that lets you see the forecast for dates months in the future — so you can stop guessing and start living your best outdoor life.

How it works: Planning a zoo visit in July? A hiking trip in October? A wedding next spring, and you really, REALLY need it not to rain? Just add the event, pick a date and location, and SunDay will analyse decades of historical climate data to give you a weather estimate. As your event gets closer, the forecast automatically upgrades to real-time meteorological data. Science!

Features that slap:

• Long-range weather predictions — plan weeks, months, or even a year ahead
• Smart forecasts that refine themselves as the date approaches (they grow up so fast)
• Timely reminders so you're not caught in the rain without an umbrella… again
• Beautiful calendar & list views to keep your outdoor life organised
• Share events with friends — because misery loves company, but sunshine loves it more
• Export & import your data — your events, your rules
• Dark mode for the night owls and light mode for the morning people (we don't judge)

Available in English, Dutch, German, French, and Spanish

Privacy first: Your data stays on YOUR device. We don't track your location, sell your data, or do anything sketchy—pinky promise.

Eco-conscious: We even gently discourage unnecessary forecast refreshes to reduce data centre energy consumption. You're welcome, planet Earth.

Who is SunDay for?

• Hikers who've been betrayed by "partly cloudy"
• Parents planning zoo trips who refuse to accept "we'll see"
• Wedding planners with anxiety
• Festival-goers who learned the hard way that mud is not a feature
• Anyone who has ever said, "I'll check the weather closer to the date" and then forgotten.

Stop gambling with the weather. Download SunDay and plan with confidence — or at least plan with a really good forecast.

Every day can be a SunDay.