Belfast weather records
Record high and low temperatures for Belfast, by month, by season, and all-time, with the dates they occurred, across 1980–2026 of daily climate history. Its hottest day on record reached 28°C on 2021-07-17; its coldest fell to -11°C on 2010-12-20.
Records by month
The warmest (▲) and coldest (▼) both the daytime high and the overnight low have ever been in each calendar month, so each column shows its record high and its record low. Tap a month for its full averages and typical range.
| Month | Daytime high | Overnight low |
|---|---|---|
| January | 14°C2022-01-01
-3°C1987-01-12
|
12°C1998-01-10
-9°C1982-01-12
|
| February | 15°C1998-02-13
-1°C2018-02-28
|
12°C1998-02-12
-5°C1986-02-22
|
| March | 18°C2012-03-28
0°C2018-03-01
|
12°C2000-03-08
-5°C1986-03-02
|
| April | 21°C2025-04-30
4°C1986-04-16
|
13°C1994-04-28
-3°C2013-04-06
|
| May | 24°C2010-05-23
4°C1993-05-14
|
14°C2026-05-29
-1°C2020-05-14
|
| June | 28°C2018-06-28
9°C1989-06-02
|
17°C2023-06-24
3°C2011-06-10
|
| July | 28°C2021-07-17
11°C1997-07-01
|
19°C2019-07-22
6°C1990-07-03
|
| August | 27°C1990-08-02
12°C1986-08-25
|
18°C1997-08-20
4°C1989-08-28
|
| September | 25°C2023-09-08
10°C2012-09-24
|
18°C2016-09-06
1°C2012-09-22
|
| October | 20°C1995-10-08
4°C2008-10-28
|
16°C2023-10-06
-2°C1992-10-30
|
| November | 17°C2022-11-11
0°C2010-11-28
|
14°C2007-11-01
-4°C2010-11-28
|
| December | 15°C2016-12-07
-6°C2010-12-21
|
13°C1994-12-11
-11°C2010-12-20
|
Records by season
The warmest (▲) and coldest (▼) both the daytime high and the overnight low have reached in each meteorological season (Northern Hemisphere, each a three-month span).
| Season | Daytime high | Overnight low |
|---|---|---|
| Winter (Dec–Feb) | 15°C1998-02-13
-6°C2010-12-21
|
13°C1994-12-11
-11°C2010-12-20
|
| Spring (Mar–May) | 24°C2010-05-23
0°C2018-03-01
|
14°C2026-05-29
-5°C1986-03-02
|
| Summer (Jun–Aug) | 28°C2021-07-17
9°C1989-06-02
|
19°C2019-07-22
3°C2011-06-10
|
| Autumn (Sep–Nov) | 25°C2023-09-08
0°C2010-11-28
|
18°C2016-09-06
-4°C2010-11-28
|
All-time records
The most extreme value Belfast has recorded for each metric across its entire history.
High
Low
Feels-like
Humidity
Wind
Gust
Precip
For rainfall, the “driest” figure is the longest run of consecutive days without measurable rain, dated to when that dry spell began.