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
07:33
Sunrise
19:03
Sunset
Moon
Waxing Gibbous
18:49
Moonrise
05:27
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 Garðabær.
Resources
UV Index
Humidity
Current stargazing conditions?
See sky darkness, moon phase, and the best viewing window for Garðabær.
View stargazing scoreWeather in Garðabær today, September 25, 2026
Rain features in Garðabær on September 25, 2026, so keep waterproofs handy through the day. The damp theme is strongest where shower chances rise. Early hours look the most unsettled, with rain probability near 46% by 05:00. The thickest cloud arrives around 05:00, reaching about 100%.
Temperatures climb from an overnight low near 7°C toward a daytime high of about 9°C. The air stays humid, with relative humidity between 87% and 95% and the peak around 08:00. A lighter breeze peaks around 20:00 near 3.7 km/h.
The second half of the day still looks unsettled, with rain probability around 22% by 19:00. Dense cloud near 100% at 16:00 keeps the feel grey. Visibility holds near 19.8 km, though it can fall to 11.1 km. Sunrise is at 07:33 and sunset at 19:03, giving 11 hours 30 minutes of sunlight today.
The practical takeaway for Garðabær on September 25, 2026 is simple: plan for rain, keep layers handy, and work around a high of about 9°C.
Frequently asked questions about weather in Garðabær
How warm does it get in Garðabær?
The warmest month in Garðabær is July, with average high temperatures of 14°C. The average temperature during this period is around 11°C.
How cold does it get in Garðabær?
The coldest month in Garðabær is January, with average low temperatures of -2°C. The average temperature during this period is around 0°C.
What is the wettest time of year in Garðabær?
The wettest month in Garðabær is September, with an average of 137mm of precipitation.
What is the driest time of year in Garðabær?
The driest month in Garðabær is July, with an average of 77mm of precipitation.
