Detailed Rainfall Data

Current/Latest conditions

Rainfall Today

2.8 mm

Rain Last 10 mins

0.0 mm

Rain Rate

0.3 mm/h

Rain Last Hour

0.4 mm

Rain Last 24 hrs

3.2 mm

Wet Hours Today

3 hrs

Last 24hrs Wet

4 hrs

Most Recent Rain

45 mins ago

Yesterday's Rain

0.4 mm

Yesterday's Wet Hours

2 hrs

Monthly Rain

9.6 mm (-81%)

Annual Rain

352.6 mm (-6%)

Summer Total

115.6 mm (-21%)

Current Spell

3 wet days

Measure

Last 12 months: Total Rainfall

Measure

Aggregation

Overlay

Averages, Extremes, and Records

Start year

1871 1950 2009

Recent

Rain	7-day	Aug	31-day	Year	365-day
Total	7.6 mm (-38%)	9.6 mm (-81%)	9.6 mm (-82%)	352.6 mm (-6%)	598.7 mm (-3%)
Wettest Day	4.4 mm 27th	4.4 mm 27th	4.4 mm 27th	33.6 mm 2nd Jun	33.6 mm 2nd Jun
Rain Days	3 days	6 days (-20%)	6 days	86 days (+13%)	141 days
Max Hourly	1.8 mm 27th	1.8 mm 27th	1.8 mm 27th	32.0 mm 23rd Jun	32.0 mm 23rd Jun
Max 10-min	0.8 mm 27th	0.8 mm 27th	0.8 mm 27th	9.4 mm 23rd Jun	9.4 mm 23rd Jun
Wet Hours	8 hrs	13 hrs	13 hrs	314 hrs	540 hrs

Long-term record (1950-2026)

Rain	Overall	Aug (all)	29th Aug
Mean	1.7 mm (-1%)	1.9 mm (+7%)	1.2 mm (-32%)
Wettest Day	147.5 mm 15th Aug 1975*	147.5 mm Day 15, 1975*	19.2 mm 2025
Rain Days	47%	42%	31%
Max Hourly	33.3 mm 27 Jun 2009	23.3 mm Day 10, 2014	7.0 mm 2025
Max 10-min	13.0 mm 12 Jun 2023	9.9 mm Day 17, 2022	2.0 mm 2012
Wet Hours	1.6 hrs (-0%)	1.1 hrs (-8%)	1.2 hrs (-2%)

Record Period Averages

Measure	7-day	Monthly	Aug	31-day	Annual	365-day
Wettest	153.7 mm 20th Aug 1975*	165.8 mm Oct 2020	159.4 mm Aug 1975*	203.9 mm 14th Sep 1975*	887.7 mm 2002*	1016.7 mm 31st Mar 2001*
Driest	0.0 mm 17 Mar 2009	0.0 mm Jul 2026	1.5 mm Aug 1995*	0.0 mm 28 Jul 2026	352.6 mm 2026	294.8 mm 29th Sep 1976*
Most Wet Hours	71 hrs 05 Oct 2020	132 hrs Oct 2020	68 hrs Aug 2015	140 hrs 07 Feb 2026	725 hrs 2012	877 hrs 30 Mar 2013
Fewest Wet Hours	0 hrs 24 Apr 2009	0 hrs Jul 2026	13 hrs Current	0 hrs 28 Jul 2026	314 hrs 2026	357 hrs 28 Feb 2012

Wet and Dry Spells

Period	Longest Wet Spell	Longest Dry Spell
Current month	3 days 18 Aug 2026 - 20 Aug 2026	51 days 28 Jun 2026 - 17 Aug 2026
Current year	9 days 05 Feb 2026 - 13 Feb 2026	51 days 28 Jun 2026 - 17 Aug 2026
Long-term record (1950-2026)	21 days 09 Nov 1960* - 29 Nov 1960*	51 days 28 Jun 2026 - 17 Aug 2026
August (all years)	16 days 23 Aug 1956* - 07 Sep 1956*	38 days 22 Jul 1976* - 28 Aug 1976*

Longest Wet and Dry Spells

Longest Wet Spells

Rank	Length	Period
1	21 days	09 Nov 1960* - 29 Nov 1960*
2	20 days	17 Oct 1960* - 05 Nov 1960*
3	20 days	25 Jan 2003* - 13 Feb 2003*
4	19 days	05 Jul 1960* - 23 Jul 1960*
5	19 days	26 Sep 1993* - 14 Oct 1993*
6	19 days	08 Feb 1995* - 26 Feb 1995*
7	19 days	30 Dec 2013 - 17 Jan 2014
8	18 days	16 May 1981* - 02 Jun 1981*
9	16 days	31 Jan 1950* - 15 Feb 1950*
10	16 days	23 Aug 1956* - 07 Sep 1956*

Longest Dry Spells

Rank	Length	Period
1	51 days	28 Jun 2026 - 17 Aug 2026
2	38 days	22 Jul 1976* - 28 Aug 1976*
3	34 days	21 Feb 1953* - 26 Mar 1953*
4	31 days	17 May 1970* - 16 Jun 1970*
5	30 days	12 Nov 1989* - 11 Dec 1989*
6	29 days	24 Aug 1959* - 21 Sep 1959*
7	29 days	11 Aug 1972* - 08 Sep 1972*
8	27 days	16 May 2023 - 11 Jun 2023
9	26 days	29 Jul 1995* - 23 Aug 1995*
10	25 days	21 Jun 1976* - 15 Jul 1976*

Cumulative rainfall vs recent extreme years (2014, 2011) and last year

Past Year Monthly Averages and Extremes (August 2025 - August 2026)

Month	Total	Wettest Day	Rain Days	Max Hourly	Max 10-min	Wet Hours
Aug 2025	25.0 mm (-54%)	19.2 mm 29th	8 days (0%)	7.0 mm 29th	2.4 mm 27th	16 hrs (-59%)
Sep 2025	50.3 mm (+1%)	17.4 mm 3rd	13 days (+44%)	4.8 mm 3rd	2.0 mm 12th	37 hrs (-10%)
Oct 2025	71.7 mm (+10%)	13.4 mm 20th	12 days (+9%)	10.8 mm 31st	6.8 mm 31st	59 hrs (+21%)
Nov 2025	62.7 mm (-6%)	11.0 mm 10th	16 days (+60%)	5.2 mm 10th	1.8 mm 10th	66 hrs (+6%)
Dec 2025	60.4 mm (+6%)	20.6 mm 18th	13 days (+18%)	3.8 mm 18th	2.2 mm 2nd	60 hrs (-3%)
Jan 2026	103.2 mm (+75%)	17.0 mm 8th	21 days (+91%)	5.6 mm 7th	1.6 mm 7th	106 hrs (+59%)
Feb 2026	96.6 mm (+115%)	14.2 mm 15th	22 days (+144%)	5.0 mm 11th	2.2 mm 11th	103 hrs (+98%)
Mar 2026	28.3 mm (-27%)	10.0 mm 6th	10 days (0%)	7.2 mm 13th	4.0 mm 13th	28 hrs (-48%)
Apr 2026	2.3 mm (-95%)	1.0 mm 5th	5 days (-50%)	1.0 mm 5th	1.0 mm 5th	3 hrs (-94%)
May 2026	11.4 mm (-75%)	3.8 mm 13th	8 days (-11%)	2.2 mm 14th	1.8 mm 14th	14 hrs (-64%)
Jun 2026	101.2 mm (+115%)	33.6 mm 2nd	14 days (+56%)	32.0 mm 23rd	9.4 mm 23rd	47 hrs (+28%)
Jul 2026	0.0 mm (-100%)	0.0 mm 1st	0 days (-100%)	-	-	0 hrs (-100%)
Aug 2026	9.6 mm (-82%)	4.4 mm 27th	6 days (-25%)	1.8 mm 27th	0.8 mm 27th	13 hrs (-66%)

View daily tables of min / max / mean Rain data for the past year
View monthly tables of min / max / mean Rain data for all months in the station history.

Past Year Seasonal Averages

Season	Total	Wet Hours	Rain Days
Winter 25/26	260.2 mm (+62%)	269 hrs (+49%)	56 days (+81%)
Spring 2026	42.0 mm (-67%)	45 hrs (-68%)	23 days (-21%)
Summer 2025	115.6 mm (-21%)	80 hrs (-27%)	23 days (-8%)
Autumn 2025	184.7 mm (+1%)	163 hrs (+6%)	41 days (+37%)

Past 24hrs and current year cumulative trends for Rain

View more Rain charts

Ranked Historical Rain Data

Wettest Days

Rank	Total	Wet Hours	Max Hourly	Max 10-min
1	147.5 mm 15th Aug 1975*	23 hrs 10 Feb 2013	33.3 mm 27 Jun 2009	13.0 mm 12 Jun 2023
2	68.7 mm 17th Aug 1977*	21 hrs 13 Oct 2014	32.0 mm 23 Jun 2026	10.6 mm 12 May 2025
3	61.7 mm 8th Aug 2002*	21 hrs 11 Jun 2012	26.4 mm 12 May 2025	10.4 mm 25 Jul 2021
4	54.7 mm 1st Jan 1998*	20 hrs 02 Oct 2020	25.5 mm 25 Jul 2021	9.9 mm 17 Aug 2022
5	52.1 mm 23rd Sep 1992*	20 hrs 03 Jun 2012	23.3 mm 10 Aug 2014	9.4 mm 23 Jun 2026
6	44.1 mm 9th Jul 1956*	20 hrs 24 Aug 2013	23.1 mm 17 Aug 2022	8.9 mm 10 Aug 2014
7	42.1 mm 10th Oct 1987*	20 hrs 01 Feb 2019	20.0 mm 12 Jul 2021	8.3 mm 05 Aug 2012
8	42.0 mm 12 Jul 2021	19 hrs 05 Jan 2025	18.7 mm 20 Sep 2014	8.2 mm 02 Nov 2022
9	41.5 mm 14th Sep 1975*	18 hrs 23 Mar 2013	18.5 mm 02 Nov 2022	8.0 mm 27 Jun 2009
10	40.7 mm 13 Oct 2014	18 hrs 10 Jun 2019	18.4 mm 06 Sep 2011	7.9 mm 20 Sep 2014

View more daily rankings

Wettest Months

Rank	Total	Wet Hours	Rain Days
1	165.8 mm Oct 2020	132 hrs Oct 2020	30 days Jan 2014
2	159.4 mm Aug 1975*	122 hrs Jan 2014	27 days Jan 2003*
3	150.8 mm Oct 2000*	108 hrs Jun 2012	27 days Oct 1960*
4	150.7 mm Oct 1987*	106 hrs Jan 2026	26 days Apr 1986*
5	144.2 mm Nov 2009	105 hrs Dec 2019	26 days Jun 1991*
6	143.6 mm Nov 1970*	104 hrs Apr 2012	26 days Oct 2000*
7	141.5 mm Jan 2014	103 hrs Nov 2009	26 days Nov 2000*
8	137.2 mm Nov 2002*	103 hrs Feb 2026	26 days Apr 1998*
9	135.4 mm Nov 2022	103 hrs Mar 2023	26 days Nov 1951*
10	133.7 mm Oct 1960*	101 hrs Dec 2012	26 days Nov 1960*

Driest Months

Rank	Total	Wet Hours	Rain Days
1	0.0 mm Jul 2026	0 hrs Jul 2026	0 days Jul 2026
2	0.8 mm Jun 2018	2 hrs May 2020	2 days Sep 1959*
3	1.5 mm Aug 1995*	3 hrs Apr 2026	2 days May 2020
4	1.8 mm Apr 2011	4 hrs Jun 2018	2 days Aug 1976*
5	2.0 mm Sep 1959*	4 hrs Apr 2011	3 days Jun 1976*
6	2.3 mm Apr 2026	4 hrs Apr 2017	3 days Jul 1976*
7	2.3 mm Jul 2022	5 hrs Mar 2025	3 days May 1956*
8	2.8 mm Apr 2021	6 hrs Jul 2022	3 days Oct 1965*
9	2.9 mm Apr 2017	6 hrs Apr 2021	3 days Apr 2011
10	3.3 mm Apr 2007*	8 hrs Feb 2023	4 days Aug 1995*

View more mean rankings

Wettest Years

Rank	Total	Wet Hours	Rain Days
1	887.7 mm 2002*	725 hrs 2012	225 days 1960*
2	868.7 mm 2000*	691 hrs 2019	213 days 2000*
3	815.2 mm 2014	676 hrs 2013	210 days 1986*
4	795.2 mm 2024	669 hrs 2024	209 days 1951*
5	777.2 mm 1960*	662 hrs 2023	198 days 1954*

Driest Years

Rank	Total	Wet Hours	Rain Days
1	352.6 mm Current	314 hrs Current	86 days Current
2	405.9 mm 1996*	407 hrs 2011	115 days 1976*
3	420.8 mm 1976*	424 hrs 2009	119 days 1973*
4	426.1 mm 1973*	472 hrs 2022	121 days 2025
5	440.8 mm 1972*	486 hrs 2025	137 days 1975*

View more mean rankings

Wettest Days in August

Rank	Total	Wet Hours	Max Hourly	Max 10-min
1	147.5 mm Day 15, 1975*	20 hrs Day 24, 2013	23.3 mm Day 10, 2014	9.9 mm Day 17, 2022
2	68.7 mm Day 17, 1977*	16 hrs Day 25, 2014	23.1 mm Day 17, 2022	8.9 mm Day 10, 2014
3	61.7 mm Day 8, 2002*	16 hrs Day 9, 2017	14.1 mm Day 5, 2012	8.3 mm Day 5, 2012
4	39.3 mm Day 3, 1969*	12 hrs Day 31, 2015	11.2 mm Day 9, 2017	7.0 mm Day 15, 2022
5	39.1 mm Day 9, 2017	12 hrs Day 2, 2023	10.0 mm Day 16, 2020	6.7 mm Day 24, 2013

Wettest Augusts

Rank	Total	Wet Hours	Rain Days
1	159.4 mm Aug 1975*	68 hrs Aug 2015	24 days Aug 1956*
2	133.5 mm Aug 1977*	57 hrs Aug 2010	22 days Aug 1992*
3	125.8 mm Aug 2002*	52 hrs Aug 2014	20 days Aug 2006*
4	118.3 mm Aug 2014	47 hrs Aug 2017	20 days Aug 2004*
5	107.1 mm Aug 2004*	43 hrs Aug 2013	20 days Aug 2008*

Driest Augusts

Rank	Total	Wet Hours	Rain Days
1	1.5 mm Aug 1995*	13 hrs Current	2 days Aug 1976*
2	7.4 mm Aug 1976*	16 hrs Aug 2025	4 days Aug 1995*
3	9.6 mm Current	16 hrs Aug 2012	4 days Aug 2022
4	13.5 mm Aug 2003*	17 hrs Aug 2022	4 days Aug 2003*
5	15.5 mm Aug 1991*	22 hrs Aug 2009	5 days Aug 1983*

*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.

Rainfall totals and extremes for each calendar day run midnight to midnight (local time), when the rain tip counter is reset.

Notes

Station rain records began in February 2009. A long-term series from nearby sites is available from 1871 (use Start year above).
The minimum recordable rain (the rain gauge resolution) is 0.2 mm
Figures in brackets refer to departure from average conditions (as a percentage for rainfall)
Rain rate records are manually checked, and changed if necessary, due to occasional lag in data transmission. Initial high readings may well be corrected at a later date.

View daily totals for the past year