This is the short version of San Salvador climate: monthly averages, with the monthly detail underneath. The gap between Nov and Apr is 2.5 C here: 25.8 C against 28.3 C. Precipitation peaks in Sep (9.42 mm/day) and bottoms out in Jan (0.13 mm/day), so a 72.5x difference between the two. Taken together that is roughly 1,480 mm of rain a year for the grid cell. Because each page is rebuilt independently, one unavailable upstream never takes the rest of the site down. Use the table for exact numbers, or the related pages below for neighbouring locations and periods.
Annual mean temperature 26.9 C
Warmest month Apr (28.3 C)
Coldest month Nov (25.8 C)
Wettest month Sep (9.42 mm/day)
All-time record high 36.2 C
All-time record low 17.0 C
Annual precipitation 1,489 mm / year
Coordinates 13.6893, -89.1872
Population 525,990
Average monthly temperature and rainfall in San Salvador
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
26.1
0.13
33.3
17.1
Feb
27.0
0.17
34.1
17.8
Mar
27.7
0.25
34.9
18.1
Apr
28.3
1.29
36.2
20.5
May
27.7
6.21
35.1
23.1
Jun
27.0
7.72
34.6
23.4
Jul
27.3
6.37
34.1
23.3
Aug
27.1
7.93
34.7
23.2
Sep
26.4
9.42
32.0
23.0
Oct
26.2
7.28
32.0
21.0
Nov
25.8
1.60
32.7
17.0
Dec
25.9
0.31
33.0
17.3
What the San Salvador climate table shows
Values are multi-decadal climatological averages for the 13.6893, -89.1872 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
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.
How much rain is 9.42 mm/day in a month?
Rain is recorded as a daily mean, so 9.42 mm/day is roughly 286 mm across a 30-day month.