Sao Luis climate: monthly averages: annual mean temperature 27.2 C; warmest month Nov (28.3 C); coldest month Apr (26.4 C).
Annual mean temperature: 27.2 C
Warmest month: Nov (28.3 C)
Coldest month: Apr (26.4 C)
Wettest month: Apr (11.91 mm/day)
All-time record high: 35.2 C
All-time record low: 21.8 C
A consolidated reference for Sao Luis climate: monthly averages, rebuilt from public data on a schedule. Expect 26.4 C at the coldest (Mar) and 28.3 C at the warmest (Nov) — a 1.9 C spread. Expect a wet season rather than rain year-round: Apr brings 11.91 mm/day against 0.48 mm/day in Oct. Taken together that is roughly 1,725 mm of rain a year for the grid cell. Every run re-reads the source and only rewrites this page when a figure actually changed. Scroll for the month-by-month figures, or jump to a neighbouring location from the links below.
Annual mean temperature 27.2 C
Warmest month Nov (28.3 C)
Coldest month Apr (26.4 C)
Wettest month Apr (11.91 mm/day)
All-time record high 35.2 C
All-time record low 21.8 C
Annual precipitation 1,716 mm / year
Coordinates -2.52972, -44.30278
Population 917,237
Average monthly temperature and rainfall in Sao Luis
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
27.1
6.17
34.0
23.5
Feb
26.6
8.75
32.8
23.4
Mar
26.4
10.39
32.8
23.6
Apr
26.4
11.91
30.9
23.7
May
26.7
7.69
30.9
23.4
Jun
26.6
4.95
31.5
22.4
Jul
26.6
2.83
33.5
21.8
Aug
27.5
0.73
34.3
23.3
Sep
28.0
0.77
35.2
23.7
Oct
28.2
0.48
34.7
23.9
Nov
28.3
0.55
35.0
24.3
Dec
28.0
1.53
34.3
23.5
What the Sao Luis climate table shows
Values are multi-decadal climatological averages for the -2.52972, -44.30278 grid cell, not a single year. Rain is the daily mean, so a value of 2.00 mm/day is about 60 mm across a 30-day month. Averages smooth over extremes, so use them for planning rather than for what to pack for next Tuesday.
Frequently asked questions
Is Sao climate data a forecast?
No. These are multi-decadal averages for the grid cell, not a prediction for any particular year.
Why do the numbers differ from a weather app?
An app shows one location on one day. These are long-run averages, so they smooth out single hot or cold spells.