Belfast
United Kingdom
Long-term weather forecast
Long-term weather forecast

October weather forecast and climate
Belfast, United Kingdom

A close-up view of the Northern Ireland City Hall located in Belfast, United Kingdom
A close-up view of the Northern Ireland City Hall located in Belfast, United Kingdom
October, like September, in Belfast, United Kingdom, is a cool autumn month, with average temperature varying between 12.9°C (55.2°F) and 6.9°C (44.4°F).

Temperature

In Belfast, United Kingdom, the average high-temperature marginally drops, from an enjoyable 16.4°C (61.5°F) in September, to a fresh 12.9°C (55.2°F). In October, in Belfast, the average low-temperature is 6.9°C (44.4°F).

Rainfall

October is the month with the most rainfall in Belfast. Rain falls for 14.4 days and accumulates 89.6mm (3.5") of precipitation.

Sea temperature

In Belfast, the average water temperature is 13.4°C (56.1°F).
Note: Swimming in 13.4°C (56.1°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

In October, the average length of the day is 10.5h.

Sunshine

In Belfast, the average sunshine is 2.9h.

UV index

In October, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health risk from the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 2 transform into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in October in Belfast?

In October, in Belfast, United Kingdom, the average high-temperature is 12.9°C (55.2°F), and the average low-temperature is 6.9°C (44.4°F).

How many days does it rain in October in Belfast?

In Belfast, during October, the rain falls for 14.4 days and regularly aggregates up to 89.6mm (3.5") of precipitation.

What is the wettest month in Belfast?

October is the month with the most rainfall in Belfast, United Kingdom. Rain falls for 14.4 days and accumulates 89.6mm (3.5") of precipitation.

What is the sea water temperature in October in Belfast?

In October, the average sea temperature in Belfast is 13.4°C (56.1°F). Swimming in 13.4°C (56.1°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

What is the average length of the day in October in Belfast?

The average length of the day in October in Belfast, United Kingdom, is 10.5h.

How long on average sun shines in October in Belfast?

In Belfast, United Kingdom, the average sunshine in October is 2.9h.

How high is the UV index in October in Belfast?

In Belfast, the average daily maximum UV index in October is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to the Sun's UV rays.
Average temperature in October - Belfast, United Kingdom
  • Average high temperature in October: 12.9°C

The warmest month (with the highest average high temperature) is July (18.8°C).
The month with the lowest average high temperature is January (7.1°C).

  • Average low temperature in October: 6.9°C

The month with the highest average low temperature is July (11.7°C).
The coldest month (with the lowest average low temperature) is February (1.6°C).

Average rainfall in October - Belfast, United Kingdom
  • Average rainfall in October: 89.6mm

The wettest month (with the highest rainfall) is October (89.6mm).
The driest month (with the lowest rainfall) is May (57.3mm).

Average rainfall days in October - Belfast, United Kingdom
  • Average rainfall days in October: 14.4 days

The month with the highest number of rainy days is January (14.8 days).
The month with the lowest number of rainy days is June (11.3 days).

Average sea temperature in October - Belfast, United Kingdom
  • Average sea temperature in October: 13.4°C

The best month for swimming (with the highest average sea temperature) is September (14.3°C).
The coldest month (with the lowest average sea temperature) is March (8°C).

Average daylight in October / Average sunshine in October - Belfast, United Kingdom
  • Average daylight in October: 10.5h

The month with the longest days is June (Average daylight: 17.2h).
The month with shortest days is December (Average daylight: 7.4h).

  • Average sunshine in October: 2.9h

The month with most sunshine is May (Average sunshine: 6.4h).
The month with least sunshine is December (Average sunshine: 1.5h).

Average UV index in October - Belfast, United Kingdom
  • Average UV index in October: 2

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are January and December (UV index 0).