Swansea, Wales, United Kingdom weather records
Record high and low temperatures for Swansea, Wales, United Kingdom, by month, by season, and all-time, with the dates they occurred, across 1981–2026 of daily climate history. Its hottest day on record reached 28°C on 2026-07-10; its coldest fell to -7°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 | 12°C2016-01-24
-4°C1987-01-12
|
11°C2008-01-19
-7°C1987-01-13
|
| February | 13°C1990-02-23
-2°C1991-02-09
|
11°C2004-02-03
-6°C1991-02-07
|
| March | 16°C2012-03-28
0°C2018-03-01
|
10°C2017-03-29
-4°C2018-03-01
|
| April | 20°C2025-04-30
4°C1986-04-07
|
11°C2007-04-24
-1°C2013-04-03
|
| May | 27°C2026-05-26
7°C1997-05-06
|
15°C2026-05-27
2°C1996-05-11
|
| June | 28°C2026-06-25
11°C1986-06-04
|
20°C2026-06-25
6°C1989-06-02
|
| July | 28°C2026-07-10
12°C1997-07-02
|
18°C1983-07-13
9°C1996-07-07
|
| August | 28°C1990-08-03
13°C1992-08-31
|
19°C1995-08-02
9°C1986-08-30
|
| September | 25°C2023-09-09
11°C2012-09-23
|
18°C2023-09-08
6°C1986-09-17
|
| October | 21°C2011-10-01
7°C2003-10-21
|
15°C2023-10-11
2°C1993-10-17
|
| November | 17°C2005-11-02
1°C2010-11-28
|
14°C2005-11-02
-1°C2010-11-28
|
| December | 14°C1985-12-02
0°C1995-12-28
|
12°C2015-12-19
-3°C1996-12-31
|
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
|
12°C2015-12-19
-7°C1987-01-13
|
| Spring (Mar–May) | 27°C2026-05-26
0°C2018-03-01
|
15°C2026-05-27
-4°C2018-03-01
|
| Summer (Jun–Aug) | 28°C2026-07-10
11°C1986-06-04
|
20°C2026-06-25
6°C1989-06-02
|
| Autumn (Sep–Nov) | 25°C2023-09-09
1°C2010-11-28
|
18°C2023-09-08
-1°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
Precip
For rainfall, the “driest” figure is the longest run of consecutive days without measurable rain, dated to when that dry spell began.