Swansea weather records
Record high and low temperatures for Swansea, 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 2026-07-10; its coldest fell to -6°C on 1987-01-13.
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
-4°C1987-01-12
|
12°C1999-01-05
-6°C1987-01-13
|
| February | 13°C1990-02-23
-1°C1991-02-07
|
11°C2004-02-03
-5°C1991-02-07
|
| March | 15°C2012-03-24
0°C2018-03-01
|
11°C2017-03-30
-4°C2018-03-01
|
| April | 19°C2025-04-30
4°C1981-04-26
|
12°C2007-04-24
0°C2013-04-02
|
| May | 27°C2026-05-26
8°C1997-05-06
|
16°C2012-05-25
4°C1996-05-11
|
| June | 28°C2026-06-25
11°C1987-06-09
|
20°C2026-06-25
7°C1991-06-04
|
| July | 28°C2026-07-10
12°C1997-07-02
|
20°C1983-07-13
9°C1996-07-07
|
| August | 26°C1995-08-02
13°C1986-08-29
|
21°C1995-08-02
10°C1986-08-31
|
| September | 24°C2021-09-07
12°C2020-09-24
|
20°C2023-09-07
7°C2007-09-27
|
| October | 21°C2011-10-01
7°C2008-10-30
|
16°C2013-10-03
3°C2008-10-29
|
| November | 16°C2005-11-02
1°C2010-11-28
|
14°C2025-11-05
-2°C2010-11-28
|
| December | 14°C1985-12-02
0°C2010-12-19
|
13°C2015-12-19
-4°C2010-12-25
|
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) | 14°C1985-12-02
-4°C1987-01-12
|
13°C2015-12-19
-6°C1987-01-13
|
| Spring (Mar–May) | 27°C2026-05-26
0°C2018-03-01
|
16°C2012-05-25
-4°C2018-03-01
|
| Summer (Jun–Aug) | 28°C2026-07-10
11°C1987-06-09
|
21°C1995-08-02
7°C1991-06-04
|
| Autumn (Sep–Nov) | 24°C2021-09-07
1°C2010-11-28
|
20°C2023-09-07
-2°C2010-11-28
|
All-time records
The most extreme value Swansea 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.