London

	England, UK
	51.47 ° N 0.32 ° W
	16 ft
	Cool temperate moist forest

Cfb

Oceanic climate

DOlk

Temperate oceanic climate with mild summer with cool winter

Traditional Koppen classification: Cfb (Oceanic climate)

Official definition:

C – temperature of warmest month greater than or equal to 10 °C and temperature of coldest month less than 18 °C, but higher than -3 °C
f – precipitation is relatively evenly distributed throughout the year and do not fulfill classification criteria for s or w type
b - temperature of each of the four warmest months is higher than 10°C, but the temperature of the warmest month is less than 22 °C

The Cfb climate type is an oceanic type of climate with mild winter and evenly distributed precipitation. Average temperature of all months is less than 22 °C, which is what differentiates it from the Cfa type. Meanwhile at least four months have average temperature of 10 °C or more.

Just like precipitation, also temperatures tend to be relatively constant and differences between day and night are not very big. Precipitation throughout the year are frequent, but not very intense and sometimes even many wetdays in a row can occur. In the winter and in the autumn are common fogs and during the year also thunderstorms.

Winters are mild (temperatures only very rarely drops below 0 °C and if, then only very slightly) and summers nicely warm. Frontal activity causes lot of cloudiness and relatively high humidity in the autumn, winter and spring.

The total annual rainfall ranges usually between 500 and 2500 mm and in the winter it sometimes also snows.

Temperate oceanic climate Cfb can be found for example in the United Kingdom, Western part of France, Germany, on the West coast of Europe, Northern part of Spain, some parts of South America (Southern and Northern tips), in Southeast Australia and New Zealand.

Modern Trewartha classification: DOlk (Temperate oceanic climate with mild summer with cool winter)

In the Trewartha classification, the category D is like in the Koppen classification, assigned to regions in the temperate zone. The criterion for this type of climate is four to seven months with average temperature of more than 10 °C. In general it is further subdivided into two subtypes: oceanic and continental. These differ in their average temperature of the coldest month.

Temperate climate is characterized by four distinct seasons and there are substantial differences between the temperatures in the summer and in the winter, but the absolute values are not so extreme and the change is gradual.

In case of the oceanic type, winter is milder than that of the continental type and the temperature of the coldest month usually above 0 °C. The weather conditions are to a large extent influenced by the nearby ocean, which causes smaller temperature variation between the individual seasons. Typical is Western wind and so we often find this type of climate on Western coasts of continents, such as for example in Western Europe or Western coast of the U.S., in latitudes between 40 and 60 ° in America and 40 and 65 ° in Europe. These regions tend to be densely inhabited.

mild summer: warmest month with average temperature between 10 and 18 °C
cool winter: coldest month with average temperature between 0 and 10 °C

Summary

51 °F
45 / 57

23.4 in
164 days

80 %

3 h 59 min/day

Temperature

	Month												Average
	1	2	3	4	5	6	7	8	9	10	11	12	Average
Min Temperature(°F)	36.0	36.0	37.0	41.0	46.0	52.0	55.0	55.0	52.0	46.0	41.0	37.0	45.0
Avg Temperature(°F)	39.0	40.0	44.0	48.0	55.0	60.0	64.0	63.0	59.0	52.0	46.0	41.0	51.0
Max Temperature (°F)	43.0	45.0	50.0	55.0	63.0	68.0	72.0	70.0	66.0	57.0	50.0	45.0	57.0
Range	7.0	9.0	13.0	14.0	17.0	16.0	17.0	15.0	14.0	11.0	9.0	8.0	12.0

	Max month	Min month	Annual range
Min Temperature	Jul, Aug	Jan, Feb	19.0°F
Avg Temperature	Jul	Jan	25.0°F
Max Temperature	Jul	Jan	29.0°F
Temperature range	May, Jul	Jan	36.0°F

													Average
	1	2	3	4	5	6	7	8	9	10	11	12	Average
Min Temperature(°F)
Avg Temperature(°F)
Max Temperature(°F)

	Mar, Apr, May				Jun, Jul, Aug				Sep, Oct, Nov				Dec, Jan, Feb
	Max	Min	Average	Range	Max	Min	Average	Range	Max	Min	Average	Range	Max	Min	Average	Range
Min Temperature	46.0	37.0	41.33	9.0	55.0	52.0	54.00	3.0	52.0	41.0	46.33	11.0	37.0	36.0	36.33	1.0
Avg Temperature	55.0	44.0	49.00	11.0	64.0	60.0	62.33	4.0	59.0	46.0	52.33	13.0	41.0	39.0	40.00	2.0
Max Temperature	63.0	50.0	56.00	13.0	72.0	68.0	70.00	4.0	66.0	50.0	57.67	16.0	45.0	43.0	44.33	2.0

Temperature

	Month												Average
	1	2	3	4	5	6	7	8	9	10	11	12	Average
Avg Temperature (°F)	39.0	40.0	44.0	48.0	55.0	60.0	64.0	63.0	59.0	52.0	46.0	41.0	51.0

	Max month	Min month	Annual range
Avg Temperature	Jul	Jan	25.0°F

	Month												Average
	1	2	3	4	5	6	7	8	9	10	11	12	Average
Avg Temperature (°F)

	Mar, Apr, May				Jun, Jul, Aug				Sep, Oct, Nov				Dec, Jan, Feb
	Max	Min	Average	Range	Max	Min	Average	Range	Max	Min	Average	Range	Max	Min	Average	Range
Avg Temperature	55.0	44.0	49.00	11.0	64.0	60.0	62.33	4.0	59.0	46.0	52.33	13.0	41.0	39.0	40.00	2.0

Humidity

	Month												Average
	1	2	3	4	5	6	7	8	9	10	11	12	Average
Avg Humidity (%)	88.0	84.0	79.0	73.0	72.0	70.0	72.0	75.0	80.0	85.0	88.0	89.0	51.0

	Max month	Min month	Annual range
Avg Humidity	Dec	Jun	19.0%

	Month												Average
	1	2	3	4	5	6	7	8	9	10	11	12	Average
Avg Humidity (%)

	Mar, Apr, May				Jun, Jul, Aug				Sep, Oct, Nov				Dec, Jan, Feb
	Max	Min	Average	Range	Max	Min	Average	Range	Max	Min	Average	Range	Max	Min	Average	Range
Avg Humidity	79.0	72.0	74.67	7.0	75.0	70.0	72.33	5.0	88.0	80.0	84.33	8.0	89.0	84.0	87.00	5.0

Precipitation

	Month												Monthly average	Annual total
	1	2	3	4	5	6	7	8	9	10	11	12	Monthly average	Annual total
Average monthly precipitation (in)	2.1	1.6	1.5	1.5	1.8	1.8	2.2	2.3	2.0	2.2	2.5	1.9	1.9	23.4
Wetdays	17	13	11	14	13	11	13	13	13	14	16	16	14	164
Wetdays ratio (%)	54.8 17,14	46.4 13,15	35.5 11,20	46.7 14,16	41.9 13,18	36.7 11,19	41.9 13,18	41.9 13,18	43.3 13,17	45.2 14,17	53.3 16,14	51.6 16,15	44.9 44.9315,55.0685

	Max month	Min month	Max Season	Min Season	Annual range
Average monthly precipitation	Nov	Mar	Autumn	Spring	1.1in
Wetdays	Jan	Mar, Jun	Autumn	Summer	6

	Month
	1	2	3	4	5	6	7	8	9	10	11	12
Average monthly precipitation (in)
Wetdays / month

	Mar, Apr, May				Jun, Jul, Aug				Sep, Oct, Nov				Dec, Jan, Feb
	Max	Min	Range	Total	Max	Min	Range	Total	Max	Min	Range	Total	Max	Min	Range	Total
Average monthly precipitation (in)	1.8	1.5	0.4	4.8	2.3	1.8	0.5	6.3	2.5	2.0	0.6	6.7	2.1	1.6	0.5	5.6
Wetdays	14	11	3	38	13	11	2	37	52	13	39	111	17	13	4	46

Precipitation

	Month												Monthly average	Annual total
	1	2	3	4	5	6	7	8	9	10	11	12	Monthly average	Annual total
Average monthly precipitation (in)	2.1	1.6	1.5	1.5	1.8	1.8	2.2	2.3	2.0	2.2	2.5	1.9	1.9	23.4

	Max month	Min month	Max Season	Min Season	Annual range
Average monthly precipitation	Nov	Mar	Autumn	Spring	1.1in

	Month
	1	2	3	4	5	6	7	8	9	10	11	12
Average monthly precipitation (in)

	Mar, Apr, May				Jun, Jul, Aug				Sep, Oct, Nov				Dec, Jan, Feb
	Max	Min	Range	Total	Max	Min	Range	Total	Max	Min	Range	Total	Max	Min	Range	Total
Average monthly precipitation (in)	1.8	1.5	0.4	4.8	2.3	1.8	0.5	6.3	2.5	2.0	0.6	6.7	2.1	1.6	0.5	5.6

Sunlight / Day length

			Max day length	Min day length	Sunlight/Day length
Jan	81 min 1 h 21 min	505 min 8 h 25 min 505,935	545 min 9 h 5 min (31.1.) 545,895	475 min 7 h 55 min (1.1.) 475,965	16.1 % 81,424
Feb	127 min 2 h 7 min	599 min 9 h 59 min 599,841	652 min 10 h 52 min (29.2.) 652,788	548 min 9 h 8 min (1.2.) 548,892	21.2 % 127,472
Mar	216 min 3 h 36 min	715 min 11 h 55 min 715,725	775 min 12 h 55 min (31.3.) 775,665	656 min 10 h 56 min (1.3.) 656,784	30.2 % 216,499
Apr	294 min 4 h 54 min	834 min 13 h 54 min 834,606	888 min 14 h 48 min (30.4.) 888,552	779 min 12 h 59 min (1.4.) 779,661	35.2 % 294,540
May	371 min 6 h 11 min	938 min 15 h 38 min 938,502	976 min 16 h 16 min (31.5.) 976,464	892 min 14 h 52 min (1.5.) 892,548	39.6 % 371,567
Jun	412 min 6 h 52 min	992 min 16 h 32 min 992,448	997 min 16 h 37 min (20.6.) 997,443	978 min 16 h 18 min (1.6.) 978,462	41.5 % 412,580
Jul	377 min 6 h 17 min	963 min 16 h 3 min 963,477	991 min 16 h 31 min (1.7.) 991,449	925 min 15 h 25 min (31.7.) 925,515	39.1 % 377,586
Aug	356 min 5 h 56 min	870 min 14 h 30 min 870,570	922 min 15 h 22 min (1.8.) 922,518	815 min 13 h 35 min (31.8.) 815,625	40.9 % 356,514
Sep	274 min 4 h 34 min	755 min 12 h 35 min 755,685	812 min 13 h 32 min (1.9.) 812,628	699 min 11 h 39 min (30.9.) 699,741	36.3 % 274,481
Oct	183 min 3 h 3 min	637 min 10 h 37 min 637,803	695 min 11 h 35 min (1.10.) 695,745	581 min 9 h 41 min (31.10.) 581,859	28.7 % 183,454
Nov	102 min 1 h 42 min	531 min 8 h 51 min 531,909	577 min 9 h 37 min (1.11.) 577,863	492 min 8 h 12 min (30.11.) 492,948	19.2 % 102,429
Dec	75 min 1 h 15 min	474 min 7 h 54 min 474,966	490 min 8 h 10 min (1.12.) 490,950	469 min 7 h 49 min (21.12.) 469,971	15.8 % 75,399
Year	259 min 4 h 19 min	735 min 12 h 15 min 735,705	997 min 16 h 37 min (19. 6.) 997,443	469 min 7 h 49 min (20. 12.) 469,971	35.2 % 259,476

	Mar, Apr, May				Jun, Jul, Aug				Sep, Oct, Nov				Dec, Jan, Feb
	Max	Min	Average	Sunlight/day	Max	Min	Average	Sunlight/day	Max	Min	Average	Sunlight/day	Max	Min	Average	Sunlight/day
(min/day)	371	216	294	35.4% 294,535	412	356	382	40.6% 382,559	274	102	186	29.1% 186,455	127	75	94	18.0% 94,430
Day length	976	656	829	35.4% 294,535	997	815	941	40.6% 382,559	812	492	641	29.1% 186,455	652	469	524	18.0% 94,430

Day length

		Max day length	Min day length
Jan	505 min 8 h 25 min 505,935	545 min 9 h 5 min (Array.1.) 545,895	475 min 7 h 55 min (1.1.) 475,965
Feb	599 min 9 h 59 min 599,841	652 min 10 h 52 min (Array.2.) 652,788	548 min 9 h 8 min (1.2.) 548,892
Mar	715 min 11 h 55 min 715,725	775 min 12 h 55 min (Array.3.) 775,665	656 min 10 h 56 min (1.3.) 656,784
Apr	834 min 13 h 54 min 834,606	888 min 14 h 48 min (Array.4.) 888,552	779 min 12 h 59 min (1.4.) 779,661
May	938 min 15 h 38 min 938,502	976 min 16 h 16 min (Array.5.) 976,464	892 min 14 h 52 min (1.5.) 892,548
Jun	992 min 16 h 32 min 992,448	997 min 16 h 37 min (Array.6.) 997,443	978 min 16 h 18 min (1.6.) 978,462
Jul	963 min 16 h 3 min 963,477	991 min 16 h 31 min (Array.7.) 991,449	925 min 15 h 25 min (31.7.) 925,515
Aug	870 min 14 h 30 min 870,570	922 min 15 h 22 min (Array.8.) 922,518	815 min 13 h 35 min (31.8.) 815,625
Sep	755 min 12 h 35 min 755,685	812 min 13 h 32 min (Array.9.) 812,628	699 min 11 h 39 min (30.9.) 699,741
Oct	637 min 10 h 37 min 637,803	695 min 11 h 35 min (Array.10.) 695,745	581 min 9 h 41 min (31.10.) 581,859
Nov	531 min 8 h 51 min 531,909	577 min 9 h 37 min (Array.11.) 577,863	492 min 8 h 12 min (30.11.) 492,948
Dec	474 min 7 h 54 min 474,966	490 min 8 h 10 min (Array.12.) 490,950	469 min 7 h 49 min (21.12.) 469,971
Year	735 min 12 h 15 min 735,705	997 min 16 h 37 min (21. 6.) 997,443	469 min 7 h 49 min (22. 12.) 469,971

	Mar, Apr, May			Jun, Jul, Aug			Sep, Oct, Nov			Dec, Jan, Feb
	Max	Min	Average	Max	Min	Average	Max	Min	Average	Max	Min	Average
Day length	976	656	829	997	815	941	812	492	641	652	469	524

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