Compare California and London Weather

California is 8585.3 kilometers (5334.6 miles) away and 8.0 hours behind London, United Kingdom. California's climate is classified as Mediterranean, hot summer (Köppen climate classification: Csa) while London has a Marine west coast, warm summer climate (Cfb).

California generally has warmer weather than London. The average mean temperature in California is 19.97°C (67.95°F) while London’s temperature is 12.17°C (53.91°F) and the difference is 7.8°C (46.04°F). California is hottest on average in July, when the day time temperature may reach 31.43°C (88.57°F), while London is warmest in July when the average high temperature is 19.93°C (67.87°F). California is coldest in December when the average low temperature is 5.42°C (41.76°F), while January is the coldest month in London, when night time temperature often falls below 2.34°C (36.21°F).

Finally, California has about 1.67 times less rainfall than London, (California’s 30.48mm vs London’s average of 50.85mm).

Comparison summary

Weather	California	London	Difference
Hottest month	July: 31.43°C (88.57°F)	July: 19.93°C (67.87°F)	11.5°C (52.7°F)
Coldest month	December: 5.42°C (41.76°F)	January: 2.34°C (36.21°F)	3.08°C (37.54°F)
Wettest month	March: 73.65mm (2.9in)	June: 67.82mm (2.67in)	5.83mm (0.23in)
Driest month	June: 1.35mm (0.05in)	April: 38.88mm (1.53in)	37.53mm (1.48in)

Contents [show]

Temperature
Precipitation
Number of days with rainfall
Wind Speed
Average Length of Day
Humidity
Comments

Temperature

Average Temperature ( °C )

City	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
California	10.64	11.75	14.28	17.72	21.83	28.18	31.43	30.67	27.74	21.21	14.28	9.91	19.97
London	5.06	5.7	8.08	11.51	14.47	17.52	19.93	19.34	16.62	12.92	8.72	6.2	12.17

City California

Jan10.64
Feb11.75
Mar14.28
Apr17.72
May21.83
Jun28.18
Jul31.43
Aug30.67
Sep27.74
Oct21.21
Nov14.28
Dec9.91
Yea19.97

City London

Jan5.06
Feb5.7
Mar8.08
Apr11.51
May14.47
Jun17.52
Jul19.93
Aug19.34
Sep16.62
Oct12.92
Nov8.72
Dec6.2
Yea12.17

Average Temperature ( °F )

City	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
California	51.15	53.15	57.7	63.9	71.29	82.72	88.57	87.21	81.93	70.18	57.7	49.84	67.95
London	41.11	42.26	46.54	52.72	58.05	63.54	67.87	66.81	61.92	55.26	47.7	43.16	53.91

City California

Jan51.15
Feb53.15
Mar57.7
Apr63.9
May71.29
Jun82.72
Jul88.57
Aug87.21
Sep81.93
Oct70.18
Nov57.7
Dec49.84
Yea67.95

City London

Jan41.11
Feb42.26
Mar46.54
Apr52.72
May58.05
Jun63.54
Jul67.87
Aug66.81
Sep61.92
Oct55.26
Nov47.7
Dec43.16
Yea53.91

Precipitation

Precipitation (mm)

City	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
California	62.04	64.84	73.65	35.34	25.94	1.35	3.45	2.39	5.47	13.31	28.05	49.91	30.48
London	43.73	50.05	39.36	38.88	53.8	67.82	59.0	64.08	40.03	59.99	43.61	49.83	50.85

City California

Jan62.04
Feb64.84
Mar73.65
Apr35.34
May25.94
Jun1.35
Jul3.45
Aug2.39
Sep5.47
Oct13.31
Nov28.05
Dec49.91
Yea30.48

City London

Jan43.73
Feb50.05
Mar39.36
Apr38.88
May53.8
Jun67.82
Jul59.0
Aug64.08
Sep40.03
Oct59.99
Nov43.61
Dec49.83
Yea50.85

Precipitation (in)

City	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
California	2.44	2.55	2.9	1.39	1.02	0.05	0.14	0.09	0.22	0.52	1.1	1.96	1.2
London	1.72	1.97	1.55	1.53	2.12	2.67	2.32	2.52	1.58	2.36	1.72	1.96	2.0

City California

Jan2.44
Feb2.55
Mar2.9
Apr1.39
May1.02
Jun0.05
Jul0.14
Aug0.09
Sep0.22
Oct0.52
Nov1.1
Dec1.96
Yea1.2

City London

Jan1.72
Feb1.97
Mar1.55
Apr1.53
May2.12
Jun2.67
Jul2.32
Aug2.52
Sep1.58
Oct2.36
Nov1.72
Dec1.96
Yea2.0

Number of days with rainfall

Average Number of Rainy Days ( Days )

City	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
California	6.64	6.45	8.82	5.64	3.0	0.27	1.09	0.55	1.0	2.55	3.91	6.18	3.84
London	10.55	9.27	7.55	8.82	11.18	13.18	12.91	11.64	8.18	10.0	9.55	10.0	10.24

City California

Jan6.64
Feb6.45
Mar8.82
Apr5.64
May3.0
Jun0.27
Jul1.09
Aug0.55
Sep1.0
Oct2.55
Nov3.91
Dec6.18
Yea3.84

City London

Jan10.55
Feb9.27
Mar7.55
Apr8.82
May11.18
Jun13.18
Jul12.91
Aug11.64
Sep8.18
Oct10.0
Nov9.55
Dec10.0
Yea10.24

Wind Speed

Average Wind Speed ( km/h )

City	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
California	5.79	6.72	7.42	7.81	7.93	8.56	7.63	7.28	6.98	6.11	5.73	5.68	6.97
London	16.43	17.66	15.98	13.56	13.36	13.38	12.63	12.9	12.73	14.71	14.97	16.72	14.59

City California

Jan5.79
Feb6.72
Mar7.42
Apr7.81
May7.93
Jun8.56
Jul7.63
Aug7.28
Sep6.98
Oct6.11
Nov5.73
Dec5.68
Yea6.97

City London

Jan16.43
Feb17.66
Mar15.98
Apr13.56
May13.36
Jun13.38
Jul12.63
Aug12.9
Sep12.73
Oct14.71
Nov14.97
Dec16.72
Yea14.59

Average Wind Speed ( mph )

City	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
California	3.6	4.18	4.61	4.85	4.93	5.32	4.74	4.52	4.34	3.8	3.56	3.53	4.33
London	10.21	10.97	9.93	8.43	8.3	8.31	7.85	8.02	7.91	9.14	9.3	10.39	9.07

City California

Jan3.6
Feb4.18
Mar4.61
Apr4.85
May4.93
Jun5.32
Jul4.74
Aug4.52
Sep4.34
Oct3.8
Nov3.56
Dec3.53
Yea4.33

City London

Jan10.21
Feb10.97
Mar9.93
Apr8.43
May8.3
Jun8.31
Jul7.85
Aug8.02
Sep7.91
Oct9.14
Nov9.3
Dec10.39
Yea9.07

Average Length of Day ( Hours )

City	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
California	7.89	7.87	10.29	12.64	13.79	14.41	14.34	13.36	12.27	9.35	8.17	7.82	11.02
London	5.78	5.8	8.58	11.96	12.36	12.64	12.7	12.29	10.76	6.44	5.92	5.47	9.23

City California

Jan7.89
Feb7.87
Mar10.29
Apr12.64
May13.79
Jun14.41
Jul14.34
Aug13.36
Sep12.27
Oct9.35
Nov8.17
Dec7.82
Yea11.02

City London

Jan5.78
Feb5.8
Mar8.58
Apr11.96
May12.36
Jun12.64
Jul12.7
Aug12.29
Sep10.76
Oct6.44
Nov5.92
Dec5.47
Yea9.23

Humidity (%)

City	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
California	65.96	64.11	61.92	56.92	46.22	33.75	29.85	29.02	31.38	40.36	52.02	62.55	47.84
London	86.76	83.02	79.54	75.64	74.89	75.66	71.63	71.71	74.74	80.25	84.67	87.01	78.79

City California

Jan65.96
Feb64.11
Mar61.92
Apr56.92
May46.22
Jun33.75
Jul29.85
Aug29.02
Sep31.38
Oct40.36
Nov52.02
Dec62.55
Yea47.84

City London

Jan86.76
Feb83.02
Mar79.54
Apr75.64
May74.89
Jun75.66
Jul71.63
Aug71.71
Sep74.74
Oct80.25
Nov84.67
Dec87.01
Yea78.79

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