Portsmouth, England, United Kingdom weather records
Record high and low temperatures for Portsmouth, England, 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 35°C on 2022-07-18; its coldest fell to -9°C on 1987-01-12.
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 | 13°C2003-01-26
-6°C1987-01-12
|
11°C2007-01-09
-9°C1987-01-12
|
| February | 15°C2017-02-20
-5°C1991-02-07
|
11°C2004-02-04
-8°C1985-02-14
|
| March | 19°C2012-03-28
0°C2018-03-01
|
10°C2017-03-30
-6°C1986-03-03
|
| April | 24°C2018-04-19
4°C2013-04-04
|
11°C2024-04-06
-4°C1996-04-02
|
| May | 29°C2026-05-26
7°C1996-05-18
|
15°C2026-05-27
0°C1996-05-04
|
| June | 34°C2026-06-24
11°C1989-06-06
|
20°C2026-06-25
2°C1991-06-04
|
| July | 35°C2022-07-18
15°C2000-07-11
|
19°C2026-07-10
7°C1993-07-12
|
| August | 34°C2022-08-11
15°C2017-08-30
|
20°C2020-08-13
7°C1986-08-29
|
| September | 31°C2023-09-09
11°C1986-09-15
|
19°C2023-09-09
4°C1988-09-30
|
| October | 26°C2011-10-01
7°C1981-10-25
|
16°C2021-10-19
-2°C2008-10-29
|
| November | 17°C2003-11-06
0°C2010-11-28
|
13°C1996-11-02
-4°C1988-11-22
|
| December | 14°C2024-12-01
-1°C1996-12-31
|
12°C2015-12-26
-6°C1981-12-12
|
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°C2017-02-20
-6°C1987-01-12
|
12°C2015-12-26
-9°C1987-01-12
|
| Spring (Mar–May) | 29°C2026-05-26
0°C2018-03-01
|
15°C2026-05-27
-6°C1986-03-03
|
| Summer (Jun–Aug) | 35°C2022-07-18
11°C1989-06-06
|
20°C2026-06-25
2°C1991-06-04
|
| Autumn (Sep–Nov) | 31°C2023-09-09
0°C2010-11-28
|
19°C2023-09-09
-4°C1988-11-22
|
All-time records
The most extreme value Portsmouth 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.