Weather in Belfast in October 2025
Average weather
Average temperature in Belfast in October
The expected average maximum temperature in October is +14°C with a maximum of +20°C and a minimum of +2°C.
The average maximum temperature goes down 44% by the end of the month, compared with the beginning of the month, from +18°C to +10°C.
Is Belfast warm or cold in October?
Belfast is typically mild in October.
Maximum temperatures go down compared to the previous month from +16°C to +13°C. The minimum temperature also goes down from +10°C to +8°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how October is compared to other months in Belfast:
Water temperature in Belfast in October
Water in Belfast in October is Cold. It varies from +13°C to +14°C, with an average of +13°C. Note that the air temperature is lower than the water temperature, averaging around +13°C.
In October, water temperatures are average relative to the rest of the year:
Can you swim in Belfast in October?
Climate in Belfast in October
| September | October | November | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +16°C | +13°C | +10°C | ||||
| Min. temperature | ||||||
| +1°C | -2°C | -6°C | ||||
| Max. temperature | ||||||
| +25°C | +21°C | +18°C | ||||
| Rainfall | ||||||
| 72 mm | 91 mm | 82 mm | ||||
| Wind | ||||||
| 4 m/s | 4 m/s | 4 m/s | ||||
| Avg. water temperature | ||||||
| +14°C | +13°C | +12°C | ||||
| Humidity | ||||||
| 82% | 84% | 85% | ||||
| Air pressure | ||||||
| 1013 HPa | 1009 HPa | 1009 HPa | ||||
| Sunny days | ||||||
| 2 | 1 | 1 | ||||
| Cloudy days | ||||||
| 10 | 11 | 10 | ||||
| Rainy days | ||||||
| 18 | 19 | 18 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
October weather is still as ok as in September. It’s getting colder in October. From +16°C in the day, the average maximum temperature lowers to +13°C. Prepare for more rain. Average rainfall goes from 72 mm to 91 mm. Humidity rises from 82% to 84%. The average wind speed doesn’t change much during October, staying around 4 m/s. The days becoming less sunny, going from 2 sunny days in September to 1 in October.
November brings much the same weather, it remains ok.
Wind
The average wind speed is 5 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Belfast is gradually increasing during October, going from 4 m/s to 7 m/s over the course of the month.
Rain
How was the weather last October in Belfast?
Climate Change over Years
The climate in Belfast in October has not changed much over the last 43 years.
The average temperature was the lowest in 1979 (+11°C) and the highest in 1995 (+14°C). The driest year was 2003 with only 711 mm of rainfall, and the wettest year was 2019 with 1255 mm.
FAQ
Is October a good time to visit Belfast?
Can you sunbathe in Belfast in October?
Can you swim in Belfast in October?
Is Belfast rainy in October?
Is it sunny in Belfast in October?
Other cities in United Kingdom
Monthly weather in Belfast
Source of the data
For this page, we’ve looked at the typical weather in Belfast, 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.