See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
15°
Drizzle
Feels Like: 13°
Min: 5°
Max: 15°
The next few hours will be mostly clear, with today reaching 15°C and dropping to 4°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
06:08
Sunrise
18:21
Sunset
Moon
Waxing Gibbous
16:47
Moonrise
05:35
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 Blenheim.
UV Index
Humidity
Current stargazing conditions?
See sky darkness, moon phase, and the best viewing window for Blenheim.
View stargazing scoreWeather in Blenheim today, September 25, 2026
Expect unsettled, showery conditions in Blenheim on September 25, 2026 as rain moves through. The day opens on a wet note and needs flexible outdoor plans.
Temperatures climb from an overnight low near 5°C toward a daytime high of about 15°C. Relative humidity sits between 65% and 93%, reaching its peak around 23:00. Airflow remains manageable, reaching about 1.8 km/h around 15:00.
Expect the wet theme to continue later, as rain odds reach 80% near 16:00. Cloud amounts hold near 71% around 15:00. Expect visibility around 16.1 km. The sun rises at 06:08 and sets at 18:21, for a total of 12 hours 12 minutes of sunlight today.
Taken together, Blenheim looks wet enough on September 25, 2026 that flexible outdoor plans work best, with temperatures peaking near 15°C.
Frequently asked questions about weather in Blenheim
How warm does it get in Blenheim?
The warmest month in Blenheim is January, with average high temperatures of 21°C. The average temperature during this period is around 17°C.
How cold does it get in Blenheim?
The coldest month in Blenheim is July, with average low temperatures of 6°C. The average temperature during this period is around 8°C.
What is the wettest time of year in Blenheim?
The wettest month in Blenheim is July, with an average of 104mm of precipitation.
What is the driest time of year in Blenheim?
The driest month in Blenheim is January, with an average of 56mm of precipitation.
