Much of the week ahead will be characterized by warm, muggy weather. High humidity and at times very high pollen levels through the week ahead will make it difficult for those who suffer from Summer allergies, like hayfever.
A large area of high pressure is currently developing to our south east, which will introduce warm south easterly winds over the next week.
Temperatures will be on the rise, with every day this week likely to reach at least 20C in Glastonbury. However, the forecast remains rather complicated in terms of cloud amounts and rainfall over the week ahead, with low pressure remaining fairly nearby, although warm temperatures will be plentiful, the prospect of showers, which could be thundery, is also there.
Preliminary outlook:
Wednesday: Dry, sunny spells. High: 22C. (Confidence 605)
Thursday: Possibility of showers – Sunny spells. High: 24C. (Confidence 50%)
Friday: Possibility of thunderstorms – Sunny spells. High: 25/26C. (Confidence 40%)
Saturday: Possibility of thunderstorms – Sunny spells. High: 27/28C. (Confidence 40%)
Sunday: Possibility of thunderstorms – Sunny spells. High: 26/27C. (Confidence 40%)
The overall picture for Glastonbury 2019 remains a warm to very warm one, with temperatures a little above average, perhaps significantly above average at times.
Forecast highs for Thursday, when most people arrive at the festival site:
Winds during the early and mid part of the week will be fairly noticeable, having a cooling effect on the air temperature. A mixture of sunny spells and a risk of some showers, which should be fairly isolated, promising a good deal of dry weather.
However, as we progress into the weekend, the suggestion is that winds may become more south easterly. This could help the increase temperatures, possibly to 29 or 30C in Glastonbury, but will also introduce the risk of thunderstorms.
All in all, some quite high temperatures are forecast, with high UV and pollen levels likely through the Glastonbury period. There is also a risk of thunderstorms, especially later in the Glastonbury festival (weekend). So to summarize, I’d take both suncream and wellies!