Mexico City (Mexico) vs Saint Louis (Brazil): Temperature, Rainfall and Sunshine

Saint Louis (Brazil) has a higher monthly mean temperature than Mexico City (Mexico) in every month of the year.

Key monthly differences

Warmest months (mean temperature) (°C)

Mexico City: May: 19.07
Saint Louis: October, November: 27.68

Coolest months (mean temperature) (°C)

Mexico City: January: 13.62
Saint Louis: March: 26.00

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

Mexico City: February: 0.20
Saint Louis: September: 1.07

Months with the most daily sunshine (hours/day)

Mexico City: May: 11.22
Saint Louis: September: 11.37

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Climate comparison questions

When are the temperatures most similar and most different?

The smallest difference in monthly mean temperature is 7.23 °C (April); the largest is 13.44 °C (December).

How much do temperatures vary across the year?

The difference between the warmest and coolest monthly means is 5.44 °C in Mexico City (Mexico) and 1.68 °C in Saint Louis (Brazil). This describes seasonal variation, not the range between daytime highs and nighttime lows.

Which location has more rainfall?

Mexico City (Mexico) has a higher daily rainfall average in 5 months and Saint Louis (Brazil) in 7; 0 months are equal at the displayed precision. Rainfall amounts do not tell us how many days it rains.

Which location has more sunshine?

Mexico City (Mexico) has more average sunshine hours per day in 5 months and Saint Louis (Brazil) in 7; 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.

Mexico City (Mexico) — Reference period: 2013–2023
Saint Louis (Brazil) — Reference period: 2013–2023

Monthly climate data

Difference: Saint Louis (Brazil) minus Mexico City (Mexico)

Temperature °C

Month	Mexico City	Saint Louis	+/-
Jan	13.62	26.55	12.92
Feb	15.91	26.19	10.28
Mar	17.34	26.00	8.66
Apr	18.94	26.17	7.23
May	19.07	26.55	7.48
Jun	17.96	26.62	8.66
Jul	16.80	26.73	9.93
Aug	16.80	27.17	10.38
Sep	16.49	27.42	10.93
Oct	15.88	27.68	11.79
Nov	15.01	27.68	12.68
Dec	14.02	27.45	13.44
⌀ Month	16.49	26.85	10.37

Average sunshine (hours/day)

Month	Mexico City	Saint Louis	+/-
Jan	9.82	9.75	-0.06
Feb	10.43	8.98	-1.45
Mar	10.83	8.60	-2.24
Apr	11.13	9.07	-2.07
May	11.22	9.89	-1.32
Jun	10.49	10.80	0.31
Jul	10.54	11.01	0.47
Aug	10.22	11.29	1.07
Sep	9.45	11.37	1.92
Oct	9.59	11.27	1.68
Nov	9.63	10.91	1.28
Dec	9.65	10.39	0.73
⌀ Month	10.25	10.28	0.03

Average daily rainfall (mm/day)

Month	Mexico City	Saint Louis	+/-
Jan	0.25	8.79	8.54
Feb	0.20	12.54	12.34
Mar	0.50	15.21	14.72
Apr	1.05	13.03	11.98
May	1.71	9.36	7.65
Jun	4.54	4.36	-0.18
Jul	5.74	2.71	-3.03
Aug	6.14	1.51	-4.63
Sep	6.17	1.07	-5.10
Oct	2.29	1.12	-1.17
Nov	0.65	2.56	1.91
Dec	0.25	4.11	3.86
⌀ Month	2.46	6.36	3.91

Snow (mm)

Month	Mexico City	Saint Louis	+/-
Jan	0.00	0.00	0.00
Feb	0.00	0.00	0.00
Mar	0.00	0.00	0.00
Apr	0.00	0.00	0.00
May	0.00	0.00	0.00
Jun	0.00	0.00	0.00
Jul	0.00	0.00	0.00
Aug	0.00	0.00	0.00
Sep	0.00	0.00	0.00
Oct	0.00	0.00	0.00
Nov	0.00	0.00	0.00
Dec	0.00	0.00	0.00
⌀ Month	0.00	0.00	0.00