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Hourly Forecast
Daylight Hours
06:46
Sunrise
19:04
Sunset
Moon
Waxing Crescent
13:18
Moonrise
20:43
Moonset
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Weather in Sunbury-on-Thames today, September 16, 2026
Sunbury-on-Thames stays under cloudy skies on September 16, 2026, with only brief brighter breaks. Plan for a day that feels grey more often than open. Expect a grey start, with morning cloud around 74% by 11:00. Outdoor plans early on should not rely on bright skies.
The day peaks near 20°C and cools toward 12°C. Relative humidity sits between 46% and 76%, reaching its peak around 23:00. Winds stay light, near 3.9 km/h by 16:00, so the day feels still more than breezy.
Expect persistent cloud later on, with amounts around 100% by 17:00. Sunshine remains the exception, not the rule. Visibility stays generally good near 39.7 km on average, though it can drop toward 34.5 km in thicker cloud or showers. The sun rises at 06:46 and sets at 19:04, for a total of 12 hours 18 minutes of sunlight today.
Overall, Sunbury-on-Thames on September 16, 2026 stays grey and muted, so outdoor plans may want a flexible backup even with a high near 20°C.
Frequently asked questions about weather in Sunbury-on-Thames
How warm does it get in Sunbury-on-Thames?
The warmest month in Sunbury-on-Thames is July, with average high temperatures of 22°C. The average temperature during this period is around 18°C.
How cold does it get in Sunbury-on-Thames?
The coldest month in Sunbury-on-Thames is January, with average low temperatures of 2°C. The average temperature during this period is around 5°C.
What is the wettest time of year in Sunbury-on-Thames?
The wettest month in Sunbury-on-Thames is October, with an average of 76mm of precipitation.
What is the driest time of year in Sunbury-on-Thames?
The driest month in Sunbury-on-Thames is April, with an average of 43mm of precipitation.
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