# UK London Faces Unusual September Warmth as Temperatures Climb Above 27°C

- Link: https://www.weather.lk/unusual-september-warmth-brings-temperatures-above-27c/
- Published: 2026-09-29T19:47:57+05:30
- Author: WeatherLK

### Rising Temperatures

The UK is experiencing an unusual spell of late September warmth, with temperatures
climbing above **27°C at Heathrow, London**. Many parts of southeast England have
reached the low to mid-20s Celsius, while temperatures elsewhere have generally 
remained in the high teens or low 20s.

These temperatures are around **3°C to 7°C above the seasonal average** for late
September.

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### **Unusually Warm Nights**

The warm conditions are expected to continue overnight. Temperatures across much
of the UK could remain between **15°C and 19°C**, while parts of southeast England
may stay just above **20°C**.

This is significantly warmer than the typical late-September nighttime range of 
around **7°C to 11°C**.

### **Warm Air from Europe**

The sudden rise in temperatures is being driven by a strong southerly airflow bringing
warm air from France and Spain. Temperatures in parts of continental Europe have
exceeded **30°C**.

However, cloud and occasional showers have kept some northern areas considerably
cooler, with several locations recording temperatures below 14°C during Tuesday 
afternoon.

### **Strong Winds Expected**

Southerly winds are expected to strengthen, with gusts of up to **50 mph** possible
across Northern Ireland and western Scotland. The strong winds are linked to a deep
area of low pressure moving north through the eastern Atlantic towards Iceland.

### **September Continues Warm Trend**

The warm spell comes as September is expected to be another warmer-than-average 
month. By 26 September, the Central England Temperature record was **2.6°C above
normal**.

The latest three-month outlook indicates an increased chance of **mild conditions
during autumn and the beginning of winter**, suggesting that above-average temperatures
could continue in the coming months.