Residents in Southampton can expect a chilly start to the week followed by a shift toward wet and breezy conditions as the region experiences temperatures slightly below the seasonal average. According to the Met Office, the forecast updated on 12 May 2026 shows that while daytime highs will reach 16°C, early morning temperatures are dropping to 5°C, with a feels-like temperature of 4°C.
Tuesday offers sunny intervals, but the weather will turn on Wednesday, 13 May. Residents should prepare for light showers throughout the morning, with the chance of rain peaking at 90% at 10am. The day will also be significantly windier, with gusts reaching up to 37mph, an increase from Tuesday’s 26mph maximum.
Despite the fluctuations in temperature and wind, air quality remains good, with Defra reporting that pollution levels stay in the low category throughout the week. Pollen counts are also expected to remain low. Those heading outdoors on Tuesday and Wednesday should note that ultraviolet levels are forecast to be high, and officials recommend wearing sunscreen and seeking shade during midday hours.
These conditions are slightly cooler than the typical May climate for Southampton, which generally sees average daytime highs of 17°C and nighttime lows of 8°C. The weather is expected to become more settled with sunny intervals as the week progresses toward the weekend, with ultraviolet levels dropping to moderate by Friday.
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