Last updated: May 6, 2024
Under the Köppen–Geiger climate classification Belfast features a subtropical climate (Cwb).Temperatures typically range between 9 °C (49 °F) and 18 °C (65 °F) through the year, but rarely can drop to -5 °C (23 °F) or can rise to as high as 31 °C (89 °F).The average annual precipitation amounts to about 731 mm (28.8 inches) and receives 96 rainy days on the 1 mm (0.04 inches) threshold annually.Belfast enjoys an average of 3973 hours of sunshine throughout the year, and daylight varies from 10 hours 32 minutes to 13 hours 42 minutes per day.
The warmest months in Belfast are January, February and December, with daily mean temperatures ranging from 18 to 18 °C (65 - 65 °F) throughout the day. The coldest temperatures usually occur in May, June and July, when daily mean temperatures range from 9 to 12 °C (49 - 54 °F) throughout the day. On average each year, Belfast experiences 73 days above 25 °C (77.0 °F) and 5 days below 0 °C (32.0 °F).
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Maximum | 29°C (85°F) | 29°C (84°F) | 29°C (84°F) | 27°C (82°F) | 25°C (77°F) | 23°C (73°F) | 24°C (75°F) | 26°C (79°F) | 31°C (88°F) | 31°C (89°F) | 31°C (89°F) | 30°C (87°F) |
Mean maximum | 28°C (82°F) | 28°C (82°F) | 27°C (80°F) | 26°C (79°F) | 23°C (73°F) | 21°C (69°F) | 22°C (72°F) | 25°C (77°F) | 29°C (85°F) | 30°C (86°F) | 30°C (86°F) | 29°C (85°F) |
Average high | 24°C (75°F) | 24°C (75°F) | 23°C (74°F) | 21°C (70°F) | 19°C (67°F) | 17°C (63°F) | 17°C (63°F) | 20°C (69°F) | 24°C (75°F) | 23°C (74°F) | 24°C (75°F) | 24°C (75°F) |
Daily mean | 18°C (65°F) | 18°C (65°F) | 17°C (63°F) | 15°C (59°F) | 12°C (54°F) | 9°C (49°F) | 9°C (49°F) | 13°C (55°F) | 16°C (60°F) | 16°C (62°F) | 18°C (64°F) | 18°C (65°F) |
Average low | 14°C (57°F) | 14°C (57°F) | 12°C (54°F) | 10°C (50°F) | 6°C (44°F) | 3°C (38°F) | 3°C (37°F) | 6°C (43°F) | 8°C (47°F) | 10°C (51°F) | 12°C (54°F) | 14°C (57°F) |
Mean minimum | 9°C (49°F) | 10°C (50°F) | 9°C (48°F) | 6°C (44°F) | 3°C (37°F) | -1°C (31°F) | -3°C (27°F) | 0°C (33°F) | 2°C (36°F) | 4°C (40°F) | 7°C (46°F) | 9°C (49°F) |
Minimum | 7°C (46°F) | 10°C (50°F) | 7°C (44°F) | 4°C (40°F) | -1°C (30°F) | -4°C (25°F) | -5°C (23°F) | -2°C (29°F) | -1°C (31°F) | 2°C (36°F) | 5°C (41°F) | 7°C (45°F) |
Compare temperature, precipitation, sunshine, UV index in Belfast, Mpumalanga, South Africa with other places around the world.
Belfast usually has the most precipitation in January, February and December, with an average of 16 rainy days and 137 mm (5.4 inches) of precipitation per month.The driest months in Belfast are June, July and August. On average, 3 mm (0.1 inches) of precipitation falls during these months.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Average precipitation mm (inches) | 120 (4.7) | 132 (5.2) | 60 (2.3) | 59 (2.3) | 20 (0.8) | 5 (0.2) | 1 (0.1) | 3 (0.1) | 15 (0.6) | 65 (2.6) | 92 (3.6) | 158 (6.2) |
Average precipitation days (≥ 1 mm) | 13 | 15 | 10 | 8 | 2 | 0 | 0 | 0 | 3 | 10 | 15 | 20 |
The sunniest months in Belfast are October, November and December, when the sun shines an average of 11 hours 46 minutes a day.Least sunny months in Belfast: January, February and June receive an average of 10 hours 16 minutes of sunshine daily.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Mean monthly sunshine hours | 306 | 314 | 348 | 316 | 318 | 304 | 319 | 330 | 332 | 354 | 356 | 372 |
Mean daily daylight hours | 13h 31m | 12h 56m | 12h 12m | 11h 27m | 10h 50m | 10h 32m | 10h 42m | 11h 13m | 11h 56m | 12h 41m | 13h 21m | 13h 42m |
Belfast experiences the highest level of ultraviolet (UV) radiation in January, February and December, when the maximum UV index can reach values of 16 - 16, which corresponds to the Extreme category of sun exposure.May, June and July are in the High / Very High exposure category. In these months, the maximum values of the UV index do not exceed 8. For more detailed information, check out our hourly Belfast UV Index data.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
UV Index (month maximum) | 16 | 16 | 13 | 10 | 8 | 6 | 7 | 9 | 11 | 13 | 14 | 16 |