Porto-Novo climate: monthly averages: annual mean temperature 26.4 C; warmest month Mar (27.8 C); coldest month Aug (24.7 C).
Annual mean temperature: 26.4 C
Warmest month: Mar (27.8 C)
Coldest month: Aug (24.7 C)
Wettest month: Jun (7.19 mm/day)
All-time record high: 34.0 C
All-time record low: 15.2 C
One page for Porto-Novo climate: monthly averages, sourced from public APIs and refreshed automatically. Expect 24.7 C at the coldest (Aug) and 27.8 C at the warmest (Mar) — a 3.1 C spread. Expect a wet month and a dry month but no real season: 7.19 mm/day in Jun against 0.65 mm/day in Dec. Taken together that is roughly 1,339 mm of rain a year for the grid cell. Values come from a public open API; a successful result is cached so a later outage never blanks the page. Exact monthly values are in the table; links below cover adjacent locations and years.
Annual mean temperature 26.4 C
Warmest month Mar (27.8 C)
Coldest month Aug (24.7 C)
Wettest month Jun (7.19 mm/day)
All-time record high 34.0 C
All-time record low 15.2 C
Annual precipitation 1,340 mm / year
Coordinates 6.49646, 2.60359
Population 264,320
Average monthly temperature and rainfall in Porto-Novo
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
26.5
0.66
33.2
15.2
Feb
27.5
1.15
34.0
18.3
Mar
27.8
2.52
33.5
21.2
Apr
27.5
3.98
32.7
24.3
May
27.1
5.62
31.4
24.1
Jun
26.0
7.19
30.4
22.8
Jul
25.1
5.32
29.1
21.4
Aug
24.7
2.99
29.3
20.7
Sep
25.3
6.61
29.7
22.2
Oct
26.0
5.54
31.0
23.2
Nov
26.8
1.82
31.8
21.8
Dec
26.8
0.65
32.6
18.5
What the Porto-Novo climate table shows
Values are multi-decadal climatological averages for the 6.49646, 2.60359 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
Does Porto-Novo get the same every year?
Close to it. Averaging decades smooths variation, so treat these as typical rather than guaranteed.