Diffa weather in May

In May, Diffa sees average daytime highs of 41°C and overnight lows near 27°C, with 5 mm of rain across 1.8 wet days and about 12.6 hours of daylight. It is the 1st-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 41°C through the month. The sky is clear or mostly clear about 60% of the time in May, and the air most often feels dry.

Daylight stretches from about 12 h 30 min at the start of May to 12 h 42 min by month's end. Set against the rest of the year, May is Diffa's 7th-clearest and 9th-windiest month. For the whole year in context, see Diffa's year-round climate.

Daytime high
41°
1st warmest
Overnight low
27°
11th coldest
Rainfall
5 mm
1.8 wet days
Daylight
12 h 36 min
5:47 AM – 6:24 PM
Cloud cover
37%
7th clearest
Wind
10 km/h
9th windiest
Solar energy
7.12 kWh/m²
Travel score
0.0
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 41°C through the month.

A typical May day in Diffa reaches about 41°C in the afternoon and slips back to 27°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 38°C and 43°C. Set against its neighbours, May runs on par with April and about 2°C warmer than June.

20°25°30°35°40°45°151015202531
Avg high (°C)Avg low (°C)
14127
24127
34127
44127
54127
64127
74127
84127
94127
104127
114127
124127
134127
144127
154127
164127
174127
184127
194127
204127
214127
224127
234127
244127
254028
264028
274028
284028
294028
304028
314028

How May really feels in Diffa

Once humidity and wind are folded in, May averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
31
31 feel dangerously hot (≥ 39°C)
Days feeling ≤ C
0
wind chill below the day's low

The story in May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Diffa weather by month

How May compares with the rest of the year at a glance. May is the 1st-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 15°0011.36.7
Feb33° / 18°0011.64.5
Mar38° / 22°0011.91.6
Apr41° / 26°10.212.30.0
May41° / 27°51.812.60.0
Jun39° / 27°133.612.80.7
Jul35° / 26°5210.412.72.3
Aug33° / 24°11515.212.43.1
Sep36° / 25°347.512.12.4
Oct37° / 24°41.411.71.7
Nov35° / 20°0011.43.6
Dec31° / 16°0011.26.2

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 60% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 15% of May, with mostly cloudy or overcast conditions the remaining 24%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17426
27426
37426
47426
57525
67525
77426
87426
97525
107525
117624
127624
137624
147624
157624
167624
177624
187624
197624
207624
217624
227624
237525
247525
257624
267624
277624
287624
297723
307723
317723

Chance of precipitation in May

Any precipitation

Diffa gets around 5 mm of rain over 1.8 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 6% and peaks near 8% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
14
24
34
44
54
65
75
85
95
105
115
125
135
145
156
166
176
186
196
206
216
226
237
247
257
267
278
288
298
308
318

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

Most of May feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, May lands in the dry band about 43% of days. Sticky, muggy-or-worse air turns up on roughly 18% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
158171870
257171970
357171970
454172081
554172081
653172181
754162181
853162191
954152191
1054152191
1154142192
1254142192
13531421102
14531421102
15521421112
16501421123
17491421133
18471421143
19451422153
20431522173
21411523183
22381523204
23351624214
24331625234
25301725254
26271726264
27241727284
28221728294
29201729314
30171730323
31161731333

Wind in May

Winds average 10 km/h in May.

Across May, daily wind ranges from about 10 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 30 min at the start of May to 12 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over May. Sunrise moves from 5:53 AM to 5:45 AM, and sunset from 6:21 PM to 6:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:536:21
212.55:526:21
312.55:526:21
412.55:516:21
512.55:516:22
612.55:516:22
712.55:506:22
812.55:506:22
912.55:496:22
1012.65:496:23
1112.65:496:23
1212.65:496:23
1312.65:486:23
1412.65:486:24
1512.65:486:24
1612.65:476:24
1712.65:476:24
1812.65:476:25
1912.65:476:25
2012.65:476:25
2112.75:466:26
2212.75:466:26
2312.75:466:26
2412.75:466:26
2512.75:466:27
2612.75:466:27
2712.75:466:27
2812.75:456:28
2912.75:456:28
3012.75:456:28
3112.75:456:29

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.12 kWh/m².

For context, solar energy here swings from a low near 5.77 kWh/m² to a high of 7.44 kWh/m² in April across the year — May's 7.12 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.3Intense
27.2Intense
37.2Intense
47.2Intense
57.2Intense
67.2Intense
77.2Intense
87.2Intense
97.2Intense
107.2Intense
117.2Intense
127.2Intense
137.2Intense
147.2Intense
157.2Intense
167.2Intense
177.2Intense
187.2Intense
197.2Intense
207.1Intense
217.1Intense
227.1Intense
237.1Intense
247.1Intense
257.0Intense
267.0Intense
277.0Intense
287.0Intense
297.0Intense
306.9Intense
316.9Intense
Planning a trip in May

Hazard calendar for Diffa

In seasonPeak

In May, Diffa sits inside its dust season. The full year is below, with each hazard's peak months called out.

Diffa sees dust haze year-round, heaviest in April.

Dust
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is May a good time to visit Diffa?

Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

0.0
Sightseeing
11th-best month of the year
2.4
Beach & pool
12th-best month of the year

May is a weaker month for outdoor sightseeing in Diffa.

What to pack for Diffa in May

From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In May, Diffa sees daytime highs around 41°C and nights near 27°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Diffa in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Diffa peaks around August 18 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 7 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highExtremeVery highAug 18UV 12Dec 15UV 7
UV index (midday)Level
Jan10Very high
Feb11Extreme
Mar12Extreme
Apr11Extreme
May10Very high
Jun10Very high
Jul11Extreme
Aug13Extreme
Sep11Extreme
Oct11Extreme
Nov9Very high
Dec7High

Air quality in Diffa in May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.

Air quality in Diffa is worst in February — around 122 µg/m³ PM2.5 (unhealthy), about 4.8× the cleanest month (August, 25 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0306090120150JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModerateUnhealthyFeb 11121 µg/m³Aug 2026 µg/m³
PM2.5 (µg/m³)Level
Jan117Unhealthy
Feb122Unhealthy
Mar109Unhealthy
Apr81Unhealthy
May56Unhealthy
Jun49Poor
Jul34Moderate
Aug25Moderate
Sep29Moderate
Oct60Unhealthy
Nov75Unhealthy
Dec112Unhealthy
Location & terrain

Where is Diffa?

Diffa sits at 13.3°N, 12.6°E, 311 m above sea level, in Niger. The nearest listed city is Maïné Soroa, 65 km away.

KukawaNguigmiMongunoMagumeriMarteMaiduguri

Topography around Diffa

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Diffa.

Within 3 km, the terrain around Diffa has only modest variations in elevation — a maximum elevation change of 10 m around an average of 303 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 12 m; within 80 km, only modest variations in elevation — a maximum elevation change of 72 m.

The land around Diffa is covered by grassland (35%), cropland (24%) and artificial surfaces (23%) within 3 km, grassland (71%) within 16 km, and grassland (90%) within 80 km.

3 km
10 m
16 km
12 m
80 km
72 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
May weather nearby: Maïné Soroa 65 km · Geidam 88 km · Kukawa 112 km · Nguigmi 117 km · Monguno 130 km · Magumeri 136 km · Marte 169 km · Maiduguri 174 km

Niger travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type A / B / C / D / E / F
220 V · 50 Hz
Prices
≈ 36% of US
price level, 2025
GDP per capita
$775
2025
Happiness
4.9 / 10
World Happiness, 2025
Homicide rate
4.4
per 100k, 2012
Road deaths
25.5
per 100k/yr, 2019
Income group
Low
World Bank
Religion
Muslim 96%ethnic religionist 4%Christian 0%agnostics and other 0%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Diffa (13.3154°, 12.6113°, elevation 311 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).