A consolidated reference for Niamey climate: monthly averages, rebuilt from public data on a schedule. Expect 23.1 C at the coldest (Jan) and 34.2 C at the warmest (May) — a 11.1 C spread. Expect a wet season rather than rain year-round: Aug brings 6.13 mm/day against 0.00 mm/day in Jan. Taken together that is roughly 541 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. Use the table for exact numbers, or the related pages below for neighbouring locations and periods.
Annual mean temperature 28.7 C
Warmest month May (34.2 C)
Coldest month Jan (23.1 C)
Wettest month Aug (6.13 mm/day)
All-time record high 44.9 C
All-time record low 9.4 C
Annual precipitation 548 mm / year
Coordinates 13.5137, 2.1098
Population 1,323,691
Average monthly temperature and rainfall in Niamey
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
23.1
0.00
38.1
9.4
Feb
26.6
0.03
42.0
10.7
Mar
30.5
0.02
43.4
13.1
Apr
33.8
0.26
44.9
18.1
May
34.2
0.75
44.6
20.8
Jun
31.9
2.71
43.2
23.3
Jul
29.3
4.44
40.8
22.1
Aug
27.4
6.13
39.1
21.1
Sep
27.9
2.81
40.4
21.3
Oct
29.1
0.64
40.0
17.5
Nov
27.1
0.01
38.9
14.5
Dec
24.0
0.00
37.7
11.2
What the Niamey climate table shows
Values are multi-decadal climatological averages for the 13.5137, 2.1098 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 Niamey get the same every year?
Close to it. Averaging decades smooths variation, so treat these as typical rather than guaranteed.