Weather in Newquay in September 2025
Average weather
Average temperature in Newquay in September
Going from a maximum of +26°C during the day to a minimum of +10°C during the night, the temperature in September averages around +20°C.
The average maximum temperature goes down 6% by the end of the month, compared with the beginning of the month, from +19°C to +18°C.
Is Newquay warm or cold in September?
Newquay is typically mild in September.
Maximum temperatures go down compared to the previous month from +19°C to +18°C. The minimum temperature also goes down from +14°C to +13°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
September is one of the warmest months in Newquay, here is the comparison with other months:
Water temperature in Newquay in September
Water in Newquay in September is Fresh. It varies from +15°C to +18°C, with an average of +16°C. This is almost similar to the air temperature, which averages +18°C.
The water temperature in September is one of the warmest of the entire year:
Can you swim in Newquay in September?
Climate in Newquay in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +19°C | +18°C | +15°C | ||||
| Min. temperature | ||||||
| +9°C | +7°C | +2°C | ||||
| Max. temperature | ||||||
| +32°C | +28°C | +24°C | ||||
| Rainfall | ||||||
| 55 mm | 56 mm | 89 mm | ||||
| Wind | ||||||
| 4 m/s | 4 m/s | 5 m/s | ||||
| Avg. water temperature | ||||||
| +17°C | +16°C | +15°C | ||||
| Humidity | ||||||
| 82% | 82% | 83% | ||||
| Air pressure | ||||||
| 1015 HPa | 1016 HPa | 1012 HPa | ||||
| Sunny days | ||||||
| 2 | 3 | 2 | ||||
| Cloudy days | ||||||
| 11 | 11 | 10 | ||||
| Rainy days | ||||||
| 17 | 16 | 19 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as ok as in August. It’s getting colder in September. From +19°C in the day, the average maximum temperature lowers to +18°C. Prepare for more rain. Average rainfall goes from 55 mm to 56 mm. Humidity levels don’t change as the month goes on, averaging around 82%. The average wind speed doesn’t change much during September, staying around 4 m/s. The good news is there are likely to be more sunny days in September, from 2 to 3.
October brings much the same weather, it remains ok.
Wind
The average wind speed is 5 m/s getting up to 10 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Newquay is gradually increasing during September, going from 2 m/s to 5 m/s over the course of the month.
Rain
How was the weather last September in Newquay?
Climate Change over Years
The climate in Newquay in September has not changed much over the last 43 years.
The average temperature was the lowest in 1986 (+12°C) and the highest in 2022 (+15°C). The driest year was 2005 with only 621 mm of rainfall, and the wettest year was 2012 with 996 mm.
FAQ
Is September a good time to visit Newquay?
Can you sunbathe in Newquay in September?
Can you swim in Newquay in September?
Is Newquay rainy in September?
Is it sunny in Newquay in September?
Other cities in United Kingdom
Monthly weather in Newquay
Source of the data
For this page, we’ve looked at the typical weather in Newquay, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.