This is the short version of Guatemala City climate: monthly averages, with the monthly detail underneath. The gap between Dec and Apr is 4.5 C here: 18.9 C against 23.4 C. Precipitation peaks in Sep (8.10 mm/day) and bottoms out in Jan (0.16 mm/day), so a 50.6x difference between the two. Taken together that is roughly 1,325 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 21.0 C
Warmest month Apr (23.4 C)
Coldest month Dec (18.9 C)
Wettest month Sep (8.10 mm/day)
All-time record high 35.7 C
All-time record low 7.5 C
Annual precipitation 1,332 mm / year
Coordinates 14.6407, -90.5133
Population 994,938
Average monthly temperature and rainfall in Guatemala City
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
19.2
0.16
31.8
7.6
Feb
20.8
0.24
33.2
8.6
Mar
22.2
0.38
35.7
9.6
Apr
23.4
1.36
35.2
10.9
May
22.7
5.27
35.3
14.6
Jun
21.5
7.49
31.2
15.5
Jul
21.3
5.55
30.1
15.3
Aug
21.2
7.18
30.3
14.7
Sep
20.8
8.10
28.9
14.3
Oct
20.4
6.17
28.9
11.8
Nov
19.3
1.43
28.7
7.5
Dec
18.9
0.27
30.8
8.0
What the Guatemala City climate table shows
Values are multi-decadal climatological averages for the 14.6407, -90.5133 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 Guatemala 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.