Detailed Temperature Data
Current/Latest conditions
Averages, Extremes, and Records
Recent
| Temperature | 7-day | Aug | 31-day | Year | 365-day |
| Lowest Min |
10.3 °C (-3.4) 23rd |
9.9 °C (-4.5) 7th |
9.9 °C (-4.5) 7th |
-4.0 °C (-7.1) 6th Jan |
-4.0 °C (-7.1) 6th Jan |
| Highest Max |
26.3 °C (+4.5) Yesterday |
35.8 °C (+13.1) 13th |
35.8 °C (+13.1) 13th |
35.8 °C (+14.0) 26th Jun |
35.8 °C (+14.0) 26th Jun |
| Highest Min |
18.8 °C (+5.4) Today |
19.8 °C (+5.5) 15th |
19.8 °C (+5.5) 15th |
21.3 °C (+7.5) 9th Jul |
21.3 °C (+7.5) 9th Jul |
| Lowest Max |
22.3 °C (+0.0) 21st |
22.3 °C (+0.0) 21st |
22.3 °C (+0.0) 21st |
1.6 °C (-6.2) 5th Jan |
1.6 °C (-6.2) 5th Jan |
| Coldest Day |
17.1 °C (-1.0) 21st |
17.1 °C (-1.0) 21st |
17.1 °C (-1.0) 21st |
-0.8 °C (-6.3) 5th Jan |
-0.8 °C (-6.3) 5th Jan |
| Warmest Day |
21.4 °C (+3.8) Yesterday |
27.5 °C (+9.0) 14th |
27.5 °C (+9.0) 14th |
29.1 °C (+11.8) 26th Jun |
29.1 °C (+11.8) 26th Jun |
| Averages | |||||
| Mean | 18.8 °C (+0.9) |
21.3 °C (+2.9) |
21.6 °C (+3.1) |
14.1 °C (+2.2) |
13.2 °C (+1.8) |
| Mean Minimum |
13.8 °C (+0.2) |
15.3 °C (+1.1) |
15.4 °C (+1.2) |
9.6 °C (+1.4) |
9.2 °C (+1.2) |
| Mean Maximum |
24.1 °C (+2.1) |
27.2 °C (+4.6) |
27.5 °C (+4.8) |
18.7 °C (+3.0) |
17.2 °C (+2.3) |
Long-term record (1881-2026)
| Temperature | Overall | Aug (all) | 27th Aug |
| Lowest Min |
-13.0 °C (-16.0) 17th Jan 1881* |
3.9 °C (-9.7) Day 24, 1940* |
7.2 °C (-6.2) 1889* |
| Highest Max |
39.1 °C (+15.8) 19 Jul 2022 |
37.8 °C (+14.9) Day 10, 2003* |
31.7 °C (+10.0) 2019 |
| Highest Min |
22.6 °C (+7.9) 29th Jul 1948* |
21.9 °C (+7.5) Day 10, 2003* |
18.9 °C (+5.5) Today |
| Lowest Max |
-6.8 °C (-14.6) 12th Jan 1987* |
12.7 °C (-10.4) Day 7, 1898* |
14.3 °C (-7.3) 1884* |
| Coldest Day |
-8.4 °C (-13.9) 9th Feb 1895* |
9.8 °C (-7.4) Day 31, 1890* |
11.9 °C (-5.6) 1884* |
| Warmest Day |
30.1 °C (+11.2) 19 Jul 2022 |
29.8 °C (+11.2) Day 10, 2003* |
25.1 °C (+7.5) 1930* |
| Averages | |||
| Mean | 10.4 °C (-1.0) |
17.2 °C (-1.1) |
16.6 °C (-0.9) |
| Mean Minimum |
6.7 °C (-1.2) |
12.8 °C (-1.3) |
12.5 °C (-0.9) |
| Mean Maximum |
14.1 °C (-0.8) |
21.5 °C (-1.0) |
20.8 °C (-0.9) |
Record Period Averages
| Measure | 7-day | Monthly | Aug | 31-day | Annual | 365-day |
| Coldest | -6.2 °C 11th Feb 1895* |
-2.2 °C Feb 1895* |
13.9 °C Aug 1912* |
-3.1 °C 11th Jan 1891* |
8.3 °C 1888* |
7.8 °C 9th Oct 1888* |
| Warmest | 26.2 °C 12th Aug 2003* |
22.4 °C Jul 2026 |
21.3 °C Current |
23.4 °C 17 Jul 2026 |
14.1 °C 2026 |
13.2 °C Today |
| Lowest Mean Daily-Min |
-9.8 °C 12th Feb 1895* |
-5.5 °C Feb 1895* |
9.9 °C Aug 1885* |
-6.2 °C 20th Feb 1895* |
4.3 °C 1887* |
4.0 °C 7th Oct 1891* |
| Highest Mean Daily-Min |
19.3 °C 28 Jun 2026 |
16.6 °C Jul 2006* |
16.3 °C Aug 1997* |
17.2 °C 16 Jul 2026 |
9.6 °C 2026 |
9.2 °C 9th Jun 2007* |
| Lowest Mean Daily-Max |
-2.8 °C 11th Feb 1895* |
0.7 °C Jan 1963* |
17.3 °C Aug 1912* |
-0.3 °C 11th Jan 1891* |
12.0 °C 1888* |
11.3 °C 10th Sep 1888* |
| Highest Mean Daily-Max |
33.5 °C 12th Aug 2003* |
28.6 °C Jul 2026 |
27.2 °C Current |
29.6 °C 17 Jul 2026 |
18.7 °C 2026 |
17.2 °C 23 Aug 2026 |
Current year vs last year daily trends for Temperature
This year min/max daily trends in detail for Temperature
Past Year Monthly Averages and Extremes (August 2025 - August 2026)
| Month | Lowest Min |
Highest Max |
Highest Min |
Lowest Max |
Coldest Day |
Warmest Day |
Mean | Mean Minimum |
Mean Maximum |
| Aug 2025 | 8.4 °C (-5.4) 22nd |
31.8 °C (+9.0) 12th |
18.3 °C (+4.0) 12th |
20.8 °C (-2.5) 1st |
16.3 °C (-1.8) 21st |
25.0 °C (+6.4) 12th |
19.2 °C (+0.9) |
13.8 °C (-0.3) |
24.2 °C (+1.7) |
| Sep 2025 | 3.9 °C (-7.0) 23rd |
26.8 °C (+8.4) 19th |
16.4 °C (+5.1) 18th |
15.4 °C (-2.1) 26th |
11.0 °C (-3.3) 23rd |
20.0 °C (+5.2) 19th |
15.1 °C (-0.2) |
11.0 °C (-0.5) |
19.6 °C (+0.5) |
| Oct 2025 | 3.9 °C (-3.8) 26th |
20.1 °C (+3.9) 6th |
14.1 °C (+4.2) 3rd |
11.0 °C (-2.5) 26th |
7.8 °C (-2.8) 26th |
16.0 °C (+2.8) 3rd |
12.4 °C (+0.7) |
9.6 °C (+1.0) |
15.1 °C (+0.3) |
| Nov 2025 | -1.3 °C (-6.1) 20th |
17.3 °C (+5.6) 6th |
14.7 °C (+8.1) 5th |
3.3 °C (-7.0) 20th |
1.3 °C (-6.3) 20th |
15.8 °C (+6.5) 5th |
9.5 °C (+1.4) |
6.7 °C (+1.2) |
11.6 °C (+0.9) |
| Dec 2025 | -0.8 °C (-4.1) 31st |
14.3 °C (+5.8) 9th |
11.4 °C (+7.6) 9th |
3.1 °C (-4.7) 31st |
1.1 °C (-4.5) 31st |
12.9 °C (+6.7) 9th |
7.8 °C (+1.9) |
5.4 °C (+1.8) |
9.9 °C (+1.7) |
| Jan 2026 | -4.0 °C (-7.1) 6th |
11.2 °C (+3.4) 18th |
9.1 °C (+6.1) 12th |
1.6 °C (-6.2) 5th |
-0.8 °C (-6.3) 5th |
10.1 °C (+4.7) 12th |
5.4 °C (+0.0) |
3.0 °C (-0.0) |
7.8 °C (-0.0) |
| Feb 2026 | -0.3 °C (-3.0) 14th |
17.3 °C (+8.4) 25th |
10.8 °C (+7.7) 24th |
5.6 °C (-2.6) 18th |
2.9 °C (-2.5) 14th |
12.7 °C (+6.6) 25th |
8.1 °C (+2.5) |
6.2 °C (+3.2) |
10.3 °C (+2.1) |
| Mar 2026 | 1.3 °C (-3.5) 22nd |
18.5 °C (+7.5) 18th |
8.7 °C (+5.3) 2nd |
8.9 °C (-1.2) 7th |
5.6 °C (-1.9) 14th |
12.1 °C (+3.1) 31st |
9.0 °C (+1.4) |
5.3 °C (+1.0) |
12.9 °C (+2.0) |
| Apr 2026 | 1.4 °C (-4.2) 6th |
26.1 °C (+12.4) 8th |
11.3 °C (+5.3) 17th |
12.2 °C (-0.8) 2nd |
9.0 °C (-0.2) 2nd |
16.8 °C (+7.1) 8th |
11.8 °C (+1.7) |
6.5 °C (+0.5) |
17.1 °C (+2.8) |
| May 2026 | 1.0 °C (-7.5) 12th |
35.2 °C (+16.4) 26th |
18.2 °C (+8.3) 23rd |
12.3 °C (-5.2) 14th |
7.5 °C (-5.3) 11th |
27.0 °C (+12.4) 26th |
16.1 °C (+2.7) |
10.5 °C (+1.5) |
21.3 °C (+3.5) |
| Jun 2026 | 8.9 °C (-2.6) 9th |
35.8 °C (+14.0) 26th |
21.0 °C (+8.2) 26th |
16.2 °C (-4.4) 11th |
12.5 °C (-3.6) 11th |
29.1 °C (+11.8) 26th |
19.5 °C (+3.0) |
14.8 °C (+2.8) |
24.6 °C (+3.7) |
| Jul 2026 | 9.6 °C (-5.0) 20th |
34.8 °C (+11.9) 9th |
21.3 °C (+7.5) 9th |
23.3 °C (+0.0) 21st |
17.8 °C (-1.1) 19th |
28.7 °C (+10.3) 9th |
22.4 °C (+3.8) |
15.9 °C (+1.7) |
28.6 °C (+5.6) |
| Aug 2026 | 9.9 °C (-4.5) 7th |
35.8 °C (+13.1) 13th |
19.8 °C (+5.5) 15th |
22.3 °C (+0.0) 21st |
17.1 °C (-1.0) 21st |
27.5 °C (+9.0) 14th |
21.3 °C (+3.0) |
15.3 °C (+1.2) |
27.2 °C (+4.7) |
View daily tables of
min /
max /
mean
Temperature data for the past year
View monthly tables of
min /
max /
mean
Temperature data for all months in the station history.
Past Year Seasonal Averages
| Season | Daily Min | Daily Max | Mean |
| Winter 25/26 | 4.8 °C (+1.6 °C) |
9.3 °C (+1.2 °C) |
7.1 °C (+1.5 °C) |
| Spring 2026 | 7.4 °C (+1.0 °C) |
17.1 °C (+2.8 °C) |
12.3 °C (+1.9 °C) |
| Summer 2025 | 14.5 °C (+1.1 °C) |
24.8 °C (+2.6 °C) |
19.8 °C (+2.0 °C) |
| Autumn 2025 | 9.1 °C (+0.6 °C) |
15.4 °C (+0.6 °C) |
12.3 °C (+0.6 °C) |
Past 24hrs and past 12 months trends for Temperature
Last 12 months: Mean Temperature
Ranked Historical Temperature Data
Warmest Days
| Rank | Daily Low | Daily High | Daily Mean |
| 1 | 22.6 °C 29th Jul 1948* |
39.1 °C 19 Jul 2022 |
30.1 °C 19 Jul 2022 |
| 2 | 21.9 °C 10th Aug 2003* |
37.8 °C 10th Aug 2003* |
29.8 °C 10th Aug 2003* |
| 3 | 21.3 °C 09 Jul 2026 |
36.8 °C 25 Jul 2019 |
29.1 °C 26 Jun 2026 |
| 4 | 21.3 °C 10 Jul 2026 |
36.8 °C 18 Jul 2022 |
28.7 °C 09 Jul 2026 |
| 5 | 21.1 °C 12 Aug 2020 |
36.2 °C 31 Jul 2020 |
28.6 °C 24 Jun 2026 |
| 6 | 21.1 °C 19 Jul 2022 |
35.8 °C 13 Aug 2026 |
28.4 °C 25 Jul 2019 |
| 7 | 21.0 °C 26 Jun 2026 |
35.8 °C 26 Jun 2026 |
28.0 °C 6th Aug 2003* |
| 8 | 20.8 °C 01 Jul 2025 |
35.7 °C 24 Jun 2026 |
27.6 °C 01 Jul 2025 |
| 9 | 20.6 °C 27 Jun 2026 |
35.6 °C 6th Aug 2003* |
27.5 °C 14 Aug 2026 |
| 10 | 20.6 °C 5th Sep 1949* |
35.5 °C 9th Aug 2003* |
27.4 °C 29th Jul 1948* |
Coldest Days
| Rank | Daily Low | Daily High | Daily Mean |
| 1 | -13.0 °C 17th Jan 1881* |
-6.8 °C 12th Jan 1987* |
-8.4 °C 9th Feb 1895* |
| 2 | -12.2 °C 7th Feb 1895* |
-6.1 °C 14th Dec 1890* |
-8.2 °C 15th Jan 1881* |
| 3 | -12.2 °C 22nd Dec 1890* |
-5.7 °C 5th Jan 1894* |
-8.1 °C 7th Feb 1895* |
| 4 | -12.1 °C 15th Jan 1881* |
-5.4 °C 1st Jan 1887* |
-8.1 °C 12th Jan 1987* |
| 5 | -11.7 °C 9th Feb 1895* |
-5.2 °C 9th Feb 1895* |
-8.1 °C 5th Jan 1894* |
| 6 | -11.7 °C 8th Feb 1895* |
-4.8 °C 4th Jan 1893* |
-7.7 °C 14th Jan 1881* |
| 7 | -11.5 °C 14th Jan 1881* |
-4.7 °C 1st Feb 1956* |
-7.6 °C 22nd Dec 1890* |
| 8 | -10.9 °C 5th Jan 1893* |
-4.2 °C 22nd Dec 1891* |
-7.5 °C 14th Dec 1890* |
| 9 | -10.8 °C 11th Jan 1891* |
-4.2 °C 16th Jan 1985* |
-7.3 °C 11th Jan 1891* |
| 10 | -10.4 °C 5th Jan 1894* |
-4.2 °C 15th Jan 1881* |
-7.1 °C 8th Feb 1895* |
Warmest Months
| Rank | Mean Low | Mean High | Mean |
| 1 | 16.6 °C Jul 2006* |
28.6 °C Jul 2026 |
22.4 °C Jul 2026 |
| 2 | 16.3 °C Aug 1997* |
27.2 °C Current |
21.9 °C Jul 2006* |
| 3 | 16.0 °C Jul 1983* |
27.2 °C Jul 2018 |
21.7 °C Jul 2018 |
| 4 | 15.9 °C Jul 2026 |
27.2 °C Jul 2006* |
21.3 °C Current |
| 5 | 15.9 °C Jul 2018 |
26.5 °C Jul 1983* |
21.3 °C Jul 1983* |
| 6 | 15.8 °C Aug 1995* |
26.2 °C Aug 2003* |
21.0 °C Aug 1995* |
| 7 | 15.6 °C Aug 2022 |
26.2 °C Jul 2022 |
20.9 °C Jul 2022 |
| 8 | 15.5 °C Aug 2020 |
26.1 °C Aug 1995* |
20.8 °C Aug 1997* |
| 9 | 15.5 °C Jul 1995* |
25.9 °C Jul 1976* |
20.8 °C Aug 2003* |
| 10 | 15.5 °C Jul 2025 |
25.8 °C Aug 2022 |
20.7 °C Aug 2022 |
Coldest Months
| Rank | Mean Low | Mean High | Mean |
| 1 | -5.5 °C Feb 1895* |
0.7 °C Jan 1963* |
-2.2 °C Feb 1895* |
| 2 | -4.7 °C Dec 1890* |
0.8 °C Dec 1890* |
-1.9 °C Dec 1890* |
| 3 | -3.9 °C Jan 1963* |
0.9 °C Feb 1947* |
-1.6 °C Jan 1963* |
| 4 | -3.8 °C Jan 1881* |
1.1 °C Feb 1986* |
-1.1 °C Feb 1947* |
| 5 | -3.3 °C Feb 1956* |
1.2 °C Feb 1895* |
-0.7 °C Jan 1881* |
| 6 | -3.1 °C Feb 1947* |
1.9 °C Feb 1963* |
-0.7 °C Feb 1986* |
| 7 | -2.9 °C Jan 1940* |
2.2 °C Jan 1940* |
-0.5 °C Feb 1956* |
| 8 | -2.8 °C Feb 1929* |
2.3 °C Feb 1956* |
-0.4 °C Jan 1940* |
| 9 | -2.5 °C Jan 1891* |
2.3 °C Jan 1881* |
-0.1 °C Feb 1963* |
| 10 | -2.5 °C Feb 1986* |
2.5 °C Feb 1942* |
0.1 °C Feb 1929* |
Warmest Years
| Rank | Mean Low | Mean High | Mean |
| 1 | 9.6 °C Current |
18.7 °C Current |
14.1 °C Current |
| 2 | 8.8 °C 2024 |
16.4 °C 2022 |
12.6 °C 2022 |
| 3 | 8.7 °C 2014 |
16.4 °C 2025 |
12.5 °C 2025 |
| 4 | 8.6 °C 2022 |
16.0 °C 2014 |
12.3 °C 2014 |
| 5 | 8.6 °C 2023 |
16.0 °C 2020 |
12.2 °C 2024 |
Coldest Years
| Rank | Mean Low | Mean High | Mean |
| 1 | 4.3 °C 1887* |
12.0 °C 1888* |
8.3 °C 1888* |
| 2 | 4.5 °C 1892* |
12.4 °C 1887* |
8.4 °C 1887* |
| 3 | 4.7 °C 1891* |
12.5 °C 1963* |
8.5 °C 1892* |
| 4 | 4.7 °C 1888* |
12.5 °C 1892* |
8.6 °C 1891* |
| 5 | 4.8 °C 1890* |
12.5 °C 1891* |
8.8 °C 1885* |
Warmest Days in August
| Rank | Daily Low | Daily High | Daily Mean |
| 1 | 21.9 °C Day 10, 2003* |
37.8 °C Day 10, 2003* |
29.8 °C Day 10, 2003* |
| 2 | 21.1 °C Day 12, 2020 |
35.8 °C Day 13, 2026 |
28.0 °C Day 6, 2003* |
| 3 | 20.4 °C Day 2, 1995* |
35.6 °C Day 6, 2003* |
27.5 °C Day 14, 2026 |
| 4 | 20.3 °C Day 6, 2003* |
35.5 °C Day 9, 2003* |
27.1 °C Day 9, 2003* |
| 5 | 20.2 °C Day 11, 2020 |
35.1 °C Day 7, 2020 |
26.9 °C Day 11, 2020 |
Coldest Days in August
| Rank | Daily Low | Daily High | Daily Mean |
| 1 | 3.9 °C Day 24, 1940* |
12.7 °C Day 7, 1898* |
9.8 °C Day 31, 1890* |
| 2 | 4.5 °C Day 31, 1890* |
13.3 °C Day 19, 1954* |
10.1 °C Day 21, 1920* |
| 3 | 5.1 °C Day 21, 1920* |
13.4 °C Day 31, 1881* |
10.2 °C Day 30, 1890* |
| 4 | 5.1 °C Day 15, 1887* |
13.5 °C Day 23, 1908* |
10.6 °C Day 20, 1920* |
| 5 | 5.1 °C Day 20, 1920* |
13.8 °C Day 1, 1888* |
10.9 °C Day 7, 1898* |
Warmest Augusts
| Rank | Mean Low | Mean High | Mean |
| 1 | 16.3 °C Aug 1997* |
27.2 °C Current |
21.3 °C Current |
| 2 | 15.8 °C Aug 1995* |
26.2 °C Aug 2003* |
21.0 °C Aug 1995* |
| 3 | 15.6 °C Aug 2022 |
26.1 °C Aug 1995* |
20.8 °C Aug 1997* |
| 4 | 15.5 °C Aug 2020 |
25.8 °C Aug 2022 |
20.8 °C Aug 2003* |
| 5 | 15.3 °C Aug 2003* |
25.4 °C Aug 1947* |
20.7 °C Aug 2022 |
Coldest Augusts
| Rank | Mean Low | Mean High | Mean |
| 1 | 9.9 °C Aug 1885* |
17.3 °C Aug 1912* |
13.9 °C Aug 1912* |
| 2 | 10.2 °C Aug 1888* |
18.3 °C Aug 1946* |
14.5 °C Aug 1920* |
| 3 | 10.3 °C Aug 1922* |
18.4 °C Aug 1956* |
14.5 °C Aug 1885* |
| 4 | 10.3 °C Aug 1920* |
18.5 °C Aug 1891* |
14.5 °C Aug 1922* |
| 5 | 10.5 °C Aug 1881* |
18.6 °C Aug 1920* |
14.5 °C Aug 1888* |
*Data from before 2009 are mostly from the historical site at Whitestone Pond in Hampstead. Where data from that record is missing, other nearby sites were used, including St James Park, Heathrow, and Kew Gardens (pre-1910). Best efforts have been made to adjust for site differences, but uncertainties are somewhat greater for this data. I am grateful to the Met Office for making this data available for free through the MIDAS Open database.
Air-temperature extremes for each calendar day run midnight to midnight (local time), when daily extremes are reset. Night minimum (21–09) and day maximum (09–21) use those fixed windows instead.
Notes
- Station temperature records began on 1st Jan 2009. A long-term series from nearby sites is available from 1881 (use Start year above).
- Figures in brackets refer to departure from average conditions
- An air frost requires the overnight (21-09) temperature to fall below freezing
- All figures, unless specified, relate to the period midnight-midnight, this being when daily extremes are reset.