Average weather, temperature, rainfall, sunshine hours
The climate of Belfast is
oceanic, with quite cold, rainy winters and mild, relatively rainy summers.
The city is the capital of Northern Ireland and is located on the east coast.
The
average temperature of the coldest month (January) is of 5.1 °C (41 °F), that of the warmest month (July) is of 15.4 °C (60 °F). In the exceptional cold spell of 2010, the temperature dropped to -15 °C (5 °F) at the Aldergrove airport (located outside the city, near Lough Neagh), and up to -13 °C (8.5 °F) at the harbour. Here are the average temperatures.
Belfast - Average temperatures| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|
| Min (°C) | 2 | 2 | 3 | 4 | 7 | 10 | 11 | 11 | 9 | 7 | 4 | 3 |
|---|
| Max (°C) | 8 | 8 | 10 | 12 | 15 | 18 | 19 | 19 | 17 | 13 | 10 | 8 |
|---|
| Min (°F) | 36 | 36 | 37 | 39 | 45 | 50 | 52 | 52 | 48 | 45 | 39 | 37 |
|---|
| Max (°F) | 46 | 46 | 50 | 54 | 59 | 64 | 66 | 66 | 63 | 55 | 50 | 46 |
|---|
amounts to 940 millimeters (37 inches) per year: so, it is at an intermediate level. It ranges from 65 mm (2.6 in) in the driest months (February, April, May, July) to 95 mm (3.7 in) in the wettest ones (October, November). Here is the average precipitation.
Belfast - Average precipitation| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
|---|
| Prec.(mm) | 90 | 65 | 75 | 65 | 65 | 70 | 65 | 85 | 75 | 95 | 95 | 90 | 940 |
|---|
| Prec.(in) | 3.5 | 2.6 | 3 | 2.6 | 2.6 | 2.8 | 2.6 | 3.3 | 3 | 3.7 | 3.7 | 3.5 | 37 |
|---|
| Days | 15 | 12 | 14 | 11 | 12 | 11 | 11 | 13 | 12 | 14 | 15 | 14 | 154 |
|---|
On average, there are around 1,245
sunshine hours per year. So, the sun doesn't shine often. Here are the average sunshine hours per day.
Belfast - Sunshine| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|
| Hours | 1 | 2 | 3 | 5 | 6 | 5 | 5 | 5 | 4 | 3 | 2 | 1 |
|---|
The
sea temperature ranges between 7 °C (45 °F) and 15 °C (59 °F). So, it is cold all year round. Here are the average sea temperatures.
Belfast - Sea temperature| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|
| Temp (°C) | 8 | 7 | 7 | 8 | 10 | 12 | 14 | 15 | 15 | 14 | 12 | 10 |
|---|
| Temp (°F) | 46 | 45 | 45 | 46 | 50 | 54 | 57 | 59 | 59 | 57 | 54 | 50 |
|---|
Best Time
The best time to visit Belfast is the summer,
from June to August, since it is the mildest of the year. The temperatures are generally good for outdoors activities, although it's better to bring an umbrella, and a sweatshirt or sweater for the evening or for cool days.