Residents in Swindon are set to experience a warm and sunny start to the week, though the Met Office warns that this unseasonable weather will be short-lived before rain and cooler temperatures return.
Wednesday is forecast to be the highlight of the week, with sunny conditions and temperatures reaching 22°C. While the air will feel slightly cooler at 21°C due to light winds from the east-northeast, it remains well above the average for early April, which is typically in the mid-teens. This warm spell, driven by high pressure to the south-east, could be the warmest weather at this point in April since 2020.
However, the mild conditions are expected to change significantly from Thursday onwards as Atlantic weather systems return. Daytime temperatures are forecast to drop by around 10°C, falling to 15°C on Thursday, when conditions will also become windier with gusts reaching 33mph. The unsettled trend will continue through Friday and Saturday, with temperatures cooling further to around 12°C, often feeling closer to 8°C or 9°C.
Sunday 12 April looks to be the wettest day of the week for the area. Light showers are expected throughout the day, with the chance of rain rising to 80% in the afternoon and temperatures continuing to feel like 8°C.
Those planning to spend time outdoors this week should be aware that pollen levels are expected to be very high from Wednesday through Saturday, which may affect hay fever sufferers. The Allergy UK charity notes that the season has begun earlier than usual this year following a wet start to 2026. Pollen levels are not expected to drop to high until Sunday.
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