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21°
Partly Cloudy
Feels Like: 20°
Min: 20°
Max: 27°
The next few hours will be mostly clear, with today reaching 26°C and dropping to 17°C. The coming days will be light rain throughout the day.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:10
Sunrise
18:09
Sunset
Moon
Waxing Gibbous
15:10
Moonrise
01:22
Moonset
Daily Forecast
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
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View stargazing scoreWeather in Isa today, September 21, 2026
Isa sees a largely clear day on September 21, 2026, interrupted by cloudier skies around 15:00. Plan for bright conditions either side of that cloudier interval. Expect a brighter morning, with limited cloud around 39% by 05:00. Conditions start on a settled note.
Expect highs of 27°C and cooler readings close to 20°C. The air stays humid, with relative humidity between 58% and 90% and the peak around 05:00. Winds stay light, near 5.6 km/h by 09:00, so the day feels still more than breezy.
Later hours favour clearer intervals, as cloud stays near 42% around 15:00. The afternoon is the better half for outdoor time. Visibility stays near 16.1 km. Daylight runs from 06:10 to 18:09, lasting 11 hours 58 minutes of sunlight today.
Overall, Isa on September 21, 2026 favours outdoor plans under mostly open skies, with a comfortable high near 27°C.
Frequently asked questions about weather in Isa
How warm does it get in Isa?
The warmest month in Isa is August, with average high temperatures of 31°C. The average temperature during this period is around 28°C.
How cold does it get in Isa?
The coldest month in Isa is January, with average low temperatures of 4°C. The average temperature during this period is around 7°C.
What is the wettest time of year in Isa?
The wettest month in Isa is June, with an average of 479mm of precipitation.
What is the driest time of year in Isa?
The driest month in Isa is December, with an average of 76mm of precipitation.
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