Detailed Sunshine Data
Current/Latest conditions
Yesterday's Sun
0.7 hrs
Yesterday's % of Max
6.2%
Monthly Sun
98 hrs (-2%)
Annual Sun
1590 hrs (+24%)
Autumn Total
380 hrs (+9%)
Last 12 months: Total Sun Hours
Measure
Aggregation
Overlay
Averages, Extremes, and Records
Recent
| Sunshine | 7-day | Sep | 31-day | Year | 365-day |
| Total | 30 hrs (-12%) |
98 hrs (-2%) |
166 hrs (+2%) |
1590 hrs (+24%) |
1912 hrs (+20%) |
| Sunniest Day |
8 hrs 16th |
12 hrs 5th |
13 hrs 25th |
15 hrs 25th Jun |
15 hrs 25th Jun |
| Sun Days |
6 days | 19 days | 26 days | 232 days | 310 days |
| Dullest Day |
0.7 hrs Yesterday |
0.2 hrs 2nd |
0 hrs 27th |
0 hrs 8th Jan |
0 hrs 26th Sep |
| % of Max | 44% | 44% | 45% | 47% | 44% |
Long-term record (1910-2026)
| Sunshine | Overall | Sep (all) | 20th Sep |
| Mean | 4 hrs (-5%) |
5 hrs (+2%) |
5 hrs (+2%) |
| Sunniest Day |
16 hrs 28th May 1922* |
13 hrs Day 9, 1919* |
11 hrs 2019 |
| Sun Days |
81% | 92% | 91% |
| Dullest Day |
0 hrs 1st Jan 1910* |
0 hrs Day 5, 1910* |
0 hrs 1921* |
| % of Max | 36% | 44% | 44% |
Record Period Averages
| Measure | 7-day | Monthly | Sep | 31-day | Annual | 365-day |
| Sunniest | 99 hrs 18th Jun 1996* |
324 hrs Jul 2026 |
229 hrs Sep 1911* |
343 hrs 12th Jun 1922* |
2019 hrs 2003* |
2061 hrs 5th May 1990* |
| Dullest | 0 hrs 16 Jan 2010 |
0 hrs Feb 1911* |
75 hrs Sep 1945* |
0 hrs 6th Jan 1947* |
1243 hrs 1936* |
1004 hrs 23rd May 1947* |
| Highest % of Max | 97% 3rd May 1990* |
71% Jul 2026 |
66% Sep 1911* |
77% 15 Aug 2026 |
48% 2003* |
48% 28th Dec 2003* |
| Lowest % of Max | 0% 16 Jan 2010 |
0% Feb 1911* |
22% Sep 1945* |
0% 6th Jan 1947* |
28% 1947* |
22% 23rd May 1947* |
Cumulative sunshine vs last year and normal
Past Year Monthly Averages and Extremes (September 2025 - September 2026)
| Month | Total | Sunniest Day |
Sun Days |
Dullest Day |
% of Max |
| Sep 2025 | 202 hrs (+37%) |
11 hrs 25th |
28 days | 0 hrs 17th |
59% |
| Oct 2025 | 98 hrs (-17%) |
9 hrs 6th |
25 days | 0 hrs 3rd |
33% |
| Nov 2025 | 80 hrs (-5%) |
8 hrs 21st |
26 days | 0 hrs 14th |
34% |
| Dec 2025 | 69 hrs (+6%) |
7 hrs 31st |
18 days | 0 hrs 1st |
32% |
| Jan 2026 | 63 hrs (-9%) |
7 hrs 4th |
22 days | 0 hrs 8th |
28% |
| Feb 2026 | 41 hrs (-48%) |
9 hrs 25th |
18 days | 0 hrs 2nd |
16% |
| Mar 2026 | 126 hrs (+11%) |
11 hrs 18th |
24 days | 0 hrs 6th |
38% |
| Apr 2026 | 229 hrs (+42%) |
14 hrs 30th |
30 days | 0.1 hrs 3rd |
61% |
| May 2026 | 226 hrs (+20%) |
15 hrs 27th |
31 days | 0.1 hrs 10th |
51% |
| Jun 2026 | 216 hrs (+11%) |
15 hrs 25th |
30 days | 0.2 hrs 11th |
48% |
| Jul 2026 | 324 hrs (+66%) |
14 hrs 8th |
31 days | 4 hrs 21st |
71% |
| Aug 2026 | 266 hrs (+44%) |
14 hrs 7th |
27 days | 0 hrs 27th |
64% |
| Sep 2026 | 98 hrs (-33%) |
12 hrs 5th |
19 days | 0.2 hrs 2nd |
44% |
View daily tables of
sunshine hours
/ % of max
for the past year
View monthly tables of
sunshine hours
/ % of max
for all months in the station history.
Past Year Seasonal Averages
| Season | Total | Sun Days | % of Max |
| Winter 25/26 | 173 hrs (-18%) |
58 days |
25% |
| Spring 2026 | 581 hrs (+26%) |
85 days |
50% |
| Summer 2026 | 806 hrs (+40%) |
88 days |
61% |
| Autumn 2025 | 380 hrs (+9%) |
79 days |
42% |
Past 31 days and current year cumulative trends for Sunshine
Ranked Historical Sunshine Data
Sunniest Days
| Rank | Total | % of Max |
| 1 | 16 hrs 28th May 1922* |
100% 21 Jan 2020 |
| 2 | 15 hrs 25 Jun 2020 |
100% 1st Dec 1965* |
| 3 | 15 hrs 26 Jun 2018 |
100% 30th Sep 1988* |
| 4 | 15 hrs 02 Jul 2018 |
100% 4th Dec 1976* |
| 5 | 15 hrs 22 Jun 2018 |
100% 7th Sep 1988* |
| 6 | 15 hrs 24 Jun 2020 |
100% 13th Nov 1965* |
| 7 | 15 hrs 25 Jun 2018 |
100% 13th Jun 1957* |
| 8 | 15 hrs 23 Jun 2020 |
100% 28th Nov 1965* |
| 9 | 15 hrs 22 Jun 2020 |
100% 2nd Aug 1981* |
| 10 | 15 hrs 03 Jul 2018 |
100% 14th Nov 1971* |
Sunniest Months
| Rank | Total | Sun Days | % of Max |
| 1 | 324 hrs Jul 2026 |
31 days May 2005* |
71% Jul 2026 |
| 2 | 312 hrs Jul 1911* |
31 days Jul 1990* |
69% May 2020 |
| 3 | 306 hrs May 2020 |
31 days Jul 2003* |
69% Aug 1995* |
| 4 | 300 hrs May 1922* |
31 days Jul 1934* |
69% Jul 1911* |
| 5 | 299 hrs May 1989* |
31 days May 1990* |
68% May 1989* |
| 6 | 288 hrs Jul 1928* |
31 days Jul 1995* |
67% May 1922* |
| 7 | 286 hrs Aug 1995* |
31 days Aug 1930* |
66% Sep 1911* |
| 8 | 286 hrs Jun 1975* |
31 days Jul 1914* |
66% Sep 1964* |
| 9 | 276 hrs May 1990* |
31 days Jul 1981* |
65% Aug 1947* |
| 10 | 274 hrs Jun 1957* |
31 days Aug 1979* |
64% Sep 1959* |
Dullest Months
| Rank | Total | Sun Days | % of Max |
| 1 | 0 hrs Jan 1947* |
0 days Feb 1947* |
0% Mar 1947* |
| 2 | 0 hrs Feb 1947* |
0 days Jan 1947* |
0% Feb 1911* |
| 3 | 0 hrs Feb 1911* |
0 days Feb 1911* |
0% Feb 1947* |
| 4 | 0 hrs Mar 1947* |
0 days Mar 1947* |
0% Jan 1947* |
| 5 | 9 hrs Dec 1956* |
4 days Dec 1956* |
4.1% Dec 1956* |
| 6 | 14 hrs Dec 1934* |
6 days Dec 1946* |
6.6% Dec 1934* |
| 7 | 19 hrs Dec 1927* |
8 days Dec 1927* |
8.0% Feb 1912* |
| 8 | 19 hrs Dec 1946* |
8 days Jan 1912* |
8.5% Dec 1946* |
| 9 | 19 hrs Dec 1916* |
9 days Dec 1931* |
8.7% Dec 1916* |
| 10 | 21 hrs Dec 1969* |
10 days Feb 1940* |
8.7% Dec 1927* |
Sunniest Years
| Rank | Total | Sun Days | % of Max |
| 1 | 2019 hrs 2003* |
327 days 2009 |
48% 2003* |
| 2 | 1910 hrs 1990* |
323 days 2003* |
47% Current |
| 3 | 1910 hrs 2025 |
323 days 2011 |
45% 2025 |
| 4 | 1901 hrs 1989* |
322 days 2023 |
45% 1990* |
| 5 | 1884 hrs 1995* |
322 days 2014 |
44% 1995* |
Dullest Years
| Rank | Total | Sun Days | % of Max |
| 1 | 1243 hrs 1936* |
224 days 1947* |
28% 1947* |
| 2 | 1259 hrs 1941* |
232 days Current |
29% 1941* |
| 3 | 1261 hrs 1932* |
266 days 1911* |
29% 1936* |
| 4 | 1274 hrs 1931* |
267 days 1946* |
29% 1912* |
| 5 | 1280 hrs 1958* |
272 days 1963* |
30% 1932* |
Sunniest Days in September
| Rank | Total | % of Max |
| 1 | 13 hrs Day 2, 1994* |
100% Day 16, 1979* |
| 2 | 13 hrs Day 10, 1919* |
100% Day 12, 1919* |
| 3 | 13 hrs Day 2, 1982* |
100% Day 2, 2018 |
| 4 | 13 hrs Day 8, 2006* |
100% Day 8, 1971* |
| 5 | 13 hrs Day 2, 1999* |
100% Day 15, 1996* |
Sunniest Septembers
| Rank | Total | Sun Days | % of Max |
| 1 | 229 hrs Sep 1911* |
30 days Sep 1914* |
66% Sep 1911* |
| 2 | 226 hrs Sep 1964* |
30 days Sep 1990* |
66% Sep 1964* |
| 3 | 223 hrs Sep 1959* |
30 days Sep 1915* |
64% Sep 1959* |
| 4 | 221 hrs Sep 1928* |
30 days Sep 2003* |
64% Sep 1928* |
| 5 | 218 hrs Sep 1914* |
30 days Sep 2007* |
64% Sep 1914* |
Dullest Septembers
| Rank | Total | Sun Days | % of Max |
| 1 | 75 hrs Sep 1945* |
19 days Current |
22% Sep 1945* |
| 2 | 87 hrs Sep 1936* |
24 days Sep 1945* |
26% Sep 1936* |
| 3 | 93 hrs Sep 1957* |
24 days Sep 2016 |
27% Sep 1957* |
| 4 | 98 hrs Sep 1932* |
24 days Sep 1963* |
29% Sep 1932* |
| 5 | 98 hrs Current |
25 days Sep 1986* |
31% Sep 1984* |
*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.
Sunshine hours are counted for each calendar day (midnight to midnight, local time) from daylight webcam imagery, as a fraction of the maximum possible.
Notes
- Sunshine totals are currently only available for prior days because they are computed daily from webcam footage using an image classification model
- Sunshine records at NW3 began in 2009. A long-term series from nearby sites is available from 1910 (use Start year above).
- Figures in brackets refer to departure from average conditions (as a percentage for sunshine)
- Sun days are days with more than 0 hours of sunshine recorded
- % of max is sunshine hours as a percentage of the maximum possible for that period.