See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
26°
Rain
Feels Like: 32°
Min: 24°
Max: 26°
The next few hours will be humid and overcast, with today reaching 26°C and dropping to 23°C. The coming days will be drizzle
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:01
Sunrise
17:59
Sunset
Moon
Waxing Gibbous
17:06
Moonrise
05:25
Moonset
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View stargazing scoreWeather in Gampaha today, September 25, 2026
Gampaha looks damp on September 25, 2026, so plan for wet spells during the day. Early travel and outdoor time should assume rain can arrive quickly. Morning plans should assume damp conditions, as rain chances climb toward 100% around 09:00. Cloud cover is also at its densest near 09:00 at roughly 100%.
The day peaks near 26°C and cools toward 24°C. Relative humidity sits between 88% and 98%, reaching its peak around 23:00. A lighter breeze peaks around 12:00 near 3.8 km/h.
Afternoon showers stay in play, peaking near 98% around 12:00. Skies remain cluttered, with cover about 100% by 12:00. Visibility stays generally good near 14.4 km on average, though it can drop toward 7.9 km in thicker cloud or showers. Sunrise is at 06:01 and sunset at 17:59, giving 11 hours 58 minutes of sunlight today.
The practical takeaway for Gampaha on September 25, 2026 is simple: plan for rain, keep layers handy, and work around a high of about 26°C.
Frequently asked questions about weather in Gampaha
How warm does it get in Gampaha?
The warmest month in Gampaha is March, with average high temperatures of 34°C. The average temperature during this period is around 29°C.
How cold does it get in Gampaha?
The coldest month in Gampaha is January, with average low temperatures of 23°C. The average temperature during this period is around 27°C.
What is the wettest time of year in Gampaha?
The wettest month in Gampaha is November, with an average of 405mm of precipitation.
What is the driest time of year in Gampaha?
The driest month in Gampaha is February, with an average of 50mm of precipitation.
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