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“September heatwave?” “Cold snap?”: Met Office weather headline review

Author: Met Office

Recent weather headlines have focused on everything from a potential September heatwave to plunging temperatures, flooding and even wintry weather.

But, how do these claims compare with the latest Met Office forecast?

In this review, we take a closer look at some of the most prominent headlines and compare them with the current outlook for the remainder of August and into September.

Are we heading for a sixth heatwave in September?

“UK weather maps plunge to 6C before possible sixth heatwave in September” is one of several headlines suggesting that another spell of significant heat could be on the horizon.

The latest Met Office outlook does indicate that temperatures may trend above average at times into September. However, the dominant weather signal for the remainder of August is for a more unsettled pattern, with frequent showers, spells of rain and temperatures generally close to seasonal averages.

While hotter spells cannot be ruled out later in the period, confidence decreases significantly beyond the next week or two. At present, a return to the exceptional heat experienced earlier this month does not appear to be the most likely outcome.

READ MORE: Will we finally see some meaningful rain this week?

The current forecast points towards low pressure remaining influential through the rest of August, bringing more widespread rainfall than many areas have seen recently. Temperatures are generally expected to remain near or a little above average.

Could Britain be in for a September heatwave?

Another headline claims that the “Met Office warns Britain could be in for September heatwave”.

The longer-range forecast does suggest temperatures could trend above average as we move through early September, particularly towards southern parts of the UK. However, it also highlights an ongoing unsettled pattern, with wetter-than-average weather likely to continue, particularly towards the north or northwest.

This means that while a heatwave remains one possible outcome later in the period, it is far from certain and is only one of several potential scenarios being considered by forecast guidance.

Is a polar vortex change bringing a freezing cold snap?

“UK snow weather latest as polar vortex change risks freezing cold snap” is another headline attracting attention.

The Met Office forecast does indicate a marked drop in temperatures compared with the heatwave that affected parts of the UK earlier in August. Through the second half of this week, many areas will experience temperatures close to average, while northern parts of Scotland could feel rather cool under a brisk northerly wind.

However, a return to more seasonable temperatures is very different from a significant cold snap. Whilst some places will experience cooler than average conditions over the next few days, current forecast guidance does not indicate widespread wintry conditions, and temperatures are more likely to be around or a little above average than significantly below average as we move into September.

It is also usual that the first air frosts of Autumn would be seen across parts of Scotland in September, and even further south, although that is less common. The first grass frosts of Autumn, indicative of low single-figure air temperatures, usually occur in September across most of the UK.

Are temperatures set to tumble to 2°C after the heatwave?

Another eye-catching headline reads: “UK weather maps show 2C cold snap after heatwave ends - 6 areas under 5C”.

Following clear skies and lighter winds, some sheltered rural locations may experience chilly nights during late August and early September. However, isolated overnight temperatures are not representative of daytime conditions across the UK as a whole.

The current outlook continues to point towards daytime temperatures remaining broadly near seasonal norms. While some northern areas may feel cool beneath cloud, showers and fresh winds, widespread unusually cold weather is not currently forecast.

Are heavy rains bringing a UK flood threat?

“Temperatures set to tumble as heavy rains bring UK flood threat” is perhaps the headline that aligns most closely with the immediate forecast.

Low pressure is expected to dominate through much of the week, bringing frequent showers and longer spells of rain. Thursday looks particularly unsettled, with heavy and potentially thundery showers affecting many areas, especially parts of northern and central England. Hail is also possible in some locations.

Friday is expected to remain showery, particularly across southern England and parts of Wales, with further heavy showers and isolated thunderstorms possible across some eastern and southeastern areas.

While localised flooding cannot be ruled out beneath the heaviest downpours, rainfall is expected to be variable in nature, with many places also experiencing drier interludes between showers.

What does the forecast actually suggest?

The strongest signal in the latest Met Office forecast is for a continuation of the more unsettled conditions that have developed this week. Rain and showers are likely to remain a frequent feature through the remainder of August. Temperatures will generally be close to average but with occasional warmer spells.

Looking further ahead into early September, forecast guidance suggests wetter-than-average weather remains more likely, particularly across northwestern areas of the UK. A northwest to southeast split appears the most probable pattern, with the northwest generally seeing more unsettled conditions and the southeast enjoying the greater chance of drier weather.

The long-range outlook also indicates temperatures may trend above average later in the period, although confidence in any specific hot spell or heatwave remains low at this range.

As always, weather headlines often focus on a single potential outcome. The Met Office forecast highlights a more nuanced picture, with showers, rain, sunny intervals and temperatures largely near average dominating the outlook, alongside continued uncertainty about how weather patterns will evolve into September.

Keep up to date with weather warnings, and you can find the latest forecast on our website, on YouTube, by following us on and Facebook, as well as on our mobile app which is available for iPhone from the App store and for Android from the Google Play store.

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This is the official blog of the Met Office news team, intended to provide journalists and bloggers with the latest weather, climate science and business news, and information from the Met Office.

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