Check out the weather forecast for the next two weeks in Southend-on-Sea. Detailed daily weather will help you plan ahead for sunny, cloudy, rainy, or cold days! Day 1: Saturday, March 22, 2025 Weather: Sprinkles. Overcast High Temperature: 10°C Low Temperature: 5°C Wind Speed: 32 km/h Precipitation Chance: 77% Humidity:...