London (Great Britain) vs Rio de Janeiro (Brazil): Temperature, Rainfall and Sunshine

Rio de Janeiro (Brazil) has a higher monthly mean temperature than London (Great Britain) in every month of the year.

Key monthly differences

Warmest months (mean temperature) (°C)

London: July: 18.57
Rio de Janeiro: January: 27.36

Coolest months (mean temperature) (°C)

London: January: 4.73
Rio de Janeiro: July: 20.62

Months with the lowest daily rainfall average (mm/day)

London: April: 1.33
Rio de Janeiro: June: 1.47

Months with the most daily sunshine (hours/day)

London: July: 10.94
Rio de Janeiro: December: 10.34

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Climate Compare: Rio de Janeiro (Brazil)

Climate comparison questions

When are the temperatures most similar and most different?

The smallest difference in monthly mean temperature is 2.05 °C (July); the largest is 22.63 °C (January).

How much do temperatures vary across the year?

The difference between the warmest and coolest monthly means is 13.84 °C in London (Great Britain) and 6.74 °C in Rio de Janeiro (Brazil). This describes seasonal variation, not the range between daytime highs and nighttime lows.

Which location has more rainfall?

London (Great Britain) has a higher daily rainfall average in 3 months and Rio de Janeiro (Brazil) in 9; 0 months are equal at the displayed precision. Rainfall amounts do not tell us how many days it rains.

Which location has more sunshine?

London (Great Britain) has more average sunshine hours per day in 4 months and Rio de Janeiro (Brazil) in 8; 0 months are equal at the displayed precision. Sunshine duration is different from daylight duration.

Data and measurement guide

Daily values are averaged separately for each calendar month over the saved reference period. Temperatures are daily means, not daytime highs. Rainfall is an average daily amount, not a monthly total; sunshine is average hours per day. These historical averages are not a weather forecast. Each location’s reference period is listed below and may differ.

London (Great Britain) — Reference period: 2013–2023
Rio de Janeiro (Brazil) — Reference period: 2013–2023

Monthly climate data

Difference: Rio de Janeiro (Brazil) minus London (Great Britain)

Temperature °C

Month	London	Rio de Janeiro	+/-
Jan	4.73	27.36	22.63
Feb	5.44	26.96	21.51
Mar	6.84	26.20	19.36
Apr	9.18	24.08	14.90
May	12.67	21.98	9.31
Jun	16.27	21.09	4.82
Jul	18.57	20.62	2.05
Aug	17.74	21.01	3.27
Sep	15.48	22.75	7.27
Oct	12.31	23.77	11.46
Nov	8.09	24.21	16.12
Dec	6.52	25.94	19.42
⌀ Month	11.15	23.83	12.68

Average sunshine (hours/day)

Month	London	Rio de Janeiro	+/-
Jan	3.74	10.28	6.54
Feb	5.11	10.03	4.92
Mar	6.38	9.97	3.59
Apr	9.22	9.43	0.21
May	10.11	8.85	-1.26
Jun	10.51	8.62	-1.90
Jul	10.94	8.78	-2.16
Aug	9.68	8.53	-1.15
Sep	8.02	9.07	1.05
Oct	5.86	8.99	3.13
Nov	4.12	9.31	5.19
Dec	3.14	10.34	7.20
⌀ Month	7.24	9.35	2.11

Average daily rainfall (mm/day)

Month	London	Rio de Janeiro	+/-
Jan	1.92	4.99	3.07
Feb	1.71	5.10	3.39
Mar	1.61	3.90	2.29
Apr	1.33	2.90	1.57
May	1.85	2.01	0.15
Jun	1.93	1.47	-0.47
Jul	1.79	1.48	-0.31
Aug	2.02	1.85	-0.17
Sep	1.61	2.10	0.49
Oct	2.51	2.60	0.09
Nov	2.27	4.43	2.16
Dec	2.10	3.80	1.69
⌀ Month	1.89	3.05	1.16

Snow (mm)

Month	London	+/-
Jan	0.94	-0.94
Feb	0.76	-0.76
Mar	0.77	-0.77
Apr	0.05	-0.05
May	0.00	0.00
Jun	0.00	0.00
Jul	0.00	0.00
Aug	0.00	0.00
Sep	0.00	0.00
Oct	0.00	0.00
Nov	0.04	-0.04
Dec	0.40	-0.40
⌀ Month	0.25	-0.25