See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
07:36
Sunrise
19:18
Sunset
Moon
Waxing Gibbous
18:51
Moonrise
05:48
Moonset
Daily Forecast
Today
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Air Quality Data Available
Upgrade to access real-time air quality data for Spa.
UV Index
Humidity
Current stargazing conditions?
See sky darkness, moon phase, and the best viewing window for Spa.
View stargazing scoreWeather in Spa today, September 25, 2026
Expect a muted, overcast feel in Spa on September 25, 2026 as cloud persists. Brighter breaks, if they arrive, should stay brief. Cloud leads the morning, peaking close to 100% near 06:00. Sunshine has little room until later in the day.
Temperatures climb from an overnight low near 8°C toward a daytime high of about 21°C. Relative humidity sits between 38% and 83%, reaching its peak around 06:00. A lighter breeze peaks around 11:00 near 2.8 km/h.
The afternoon keeps an overcast feel, as cloud reaches about 62% around 12:00. Outdoor plans may still want a flexible backup. Expect visibility near 40.4 km, with poorer spells close to 33.5 km. The sun rises at 07:36 and sets at 19:18, for a total of 11 hours 42 minutes of sunlight today.
Overall, Spa on September 25, 2026 stays grey and muted, so outdoor plans may want a flexible backup even with a high near 21°C.
Frequently asked questions about weather in Spa
How warm does it get in Spa?
The warmest month in Spa is August, with average high temperatures of 22°C. The average temperature during this period is around 18°C.
How cold does it get in Spa?
The coldest month in Spa is January, with average low temperatures of 0°C. The average temperature during this period is around 2°C.
What is the wettest time of year in Spa?
The wettest month in Spa is January, with an average of 124mm of precipitation.
What is the driest time of year in Spa?
The driest month in Spa is April, with an average of 66mm of precipitation.
Explore more weather forecasts
- Theux, Wallonia
- Brussels, Bruxelles-Capitale
- Heusy, Wallonia
- Antwerpen, Flanders
- Verviers, Wallonia
- Gent, Flanders
- Malmédy, Wallonia
- Charleroi, Wallonia
- Aywaille, Wallonia
- Liège, Wallonia
- Dison, Wallonia
- Schaerbeek, Bruxelles-Capitale
- Sprimont, Wallonia
- Brugge, Flanders
- Soumagne, Wallonia
- Namur, Wallonia
