A consolidated reference for Merlo climate: monthly averages, rebuilt from public data on a schedule. Expect 9.3 C at the coldest (Jul) and 24.8 C at the warmest (Jan) — a 15.5 C spread. Expect a wet month and a dry month but no real season: 4.42 mm/day in Feb against 1.63 mm/day in Jun. Taken together that is roughly 1,110 mm of rain a year for the grid cell. The build runs on a schedule and caches the last good response, so the numbers stay put even when the upstream API is having a bad day. Scroll for the month-by-month figures, or jump to a neighbouring location from the links below.
Annual mean temperature 16.9 C
Warmest month Jan (24.8 C)
Coldest month Jul (9.3 C)
Wettest month Feb (4.42 mm/day)
All-time record high 42.1 C
All-time record low -4.1 C
Annual precipitation 1,110 mm / year
Coordinates -34.66536, -58.72744
Population 268,961
Average monthly temperature and rainfall in Merlo
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
24.8
3.54
42.1
10.4
Feb
23.6
4.42
39.9
7.6
Mar
21.0
3.94
36.8
5.4
Apr
17.0
3.33
35.4
2.6
May
13.2
2.32
29.3
-0.8
Jun
10.1
1.63
26.6
-4.1
Jul
9.3
2.18
26.8
-4.0
Aug
11.2
2.23
31.4
-2.7
Sep
13.4
2.68
31.3
-0.7
Oct
16.6
3.65
34.7
1.3
Nov
20.1
3.46
38.9
3.1
Dec
23.0
3.13
40.2
7.2
What the Merlo climate table shows
Values are multi-decadal climatological averages for the -34.66536, -58.72744 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 Merlo 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.