Sunshine Holiday

Sunshine Holiday is a free website for finding somewhere warm to go. You pick your travel dates and it ranks over 200 destinations by the weather you can expect there. For trips in the next 16 days it uses live forecasts. Further out, it falls back on historical climate averages.

Each destination shows daytime highs and lows, sea temperature, a sunshine rating, sunrise and sunset, and how warm it'll be at 9pm. Each destination page also has a month-by-month table of typical rainfall and humidity. You can filter by region, by minimum temperature, and by where you're flying from (the UK, US, Australia and over a dozen other countries).

There's a "Where's Hot This Week" page that re-ranks itself daily, separate Beach Holidays and City Breaks pages, and an optional weekly email of the warmest spots.

I made it for my own use, to stop flicking between weather sites when booking a break. It's free to use, with no account needed.