Biltine weather in May

In May, Biltine sees average daytime highs of 40°C and overnight lows near 27°C, with 6 mm of rain across 1.9 wet days and about 12.7 hours of daylight. It is the 1st-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 40°C through the month. The sky is clear or mostly clear about 73% 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 48 min by month's end. Set against the rest of the year, May is Biltine's 7th-clearest and 7th-windiest month. For the whole year in context, see Biltine's year-round climate.

Daytime high
40°
1st warmest
Overnight low
27°
12th coldest
Rainfall
6 mm
1.9 wet days
Daylight
12 h 42 min
5:12 AM – 5:53 PM
Cloud cover
27%
7th clearest
Wind
13 km/h
7th windiest
Solar energy
7.36 kWh/m²
Travel score
0.1
out of 10

Biltine is place in Wadi Fira Region, Chad.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 40°C through the month.

A typical May day in Biltine reaches about 40°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 37°C and 42°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)
14027
24027
34027
44027
54027
64027
74027
84027
94027
104027
114027
124027
134027
144027
154027
164027
174027
184027
194027
204027
214027
224027
234027
244027
254027
264027
274027
284027
294027
304027
313927

How May really feels in Biltine

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.

Biltine 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
Jan32° / 17°0011.25.3
Feb35° / 19°0011.53.7
Mar37° / 22°0011.91.7
Apr40° / 26°10.312.30.2
May40° / 27°61.912.70.1
Jun39° / 26°154.212.80.9
Jul35° / 24°8312.912.82.4
Aug32° / 23°1601912.53.2
Sep35° / 24°416.412.12.5
Oct37° / 24°41.211.71.8
Nov35° / 21°0011.33.3
Dec33° / 17°0011.24.9

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 73% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 12% of May, with mostly cloudy or overcast conditions the remaining 15%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18515
28515
38416
48416
58416
68416
78416
88416
98416
108515
118515
128515
138515
148515
158614
168614
178614
188614
198614
208713
218713
228713
238614
248614
258614
268614
278515
288515
298515
308515
318515

Chance of precipitation in May

Any precipitation

Biltine gets around 6 mm of rain over 1.9 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 11% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
13
23
34
44
54
64
74
84
94
104
114
124
134
145
155
165
175
185
195
206
216
227
237
248
258
269
279
2810
2910
3011
3111

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 80% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1889300
2879400
3879400
4879400
5869500
6869500
7869500
8859600
9849610
10858610
11858610
12858610
13848710
14857710
15847720
16847720
17837820
18828820
19808930
20808930
217881040
227691140
237691140
2473101250
2573101250
2672101350
2770111360
2869111460
2967121461
3065121571
3164131571

Wind in May

Winds average 13 km/h in May.

Across May, daily wind ranges from about 12 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 30 min at the start of May to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over May. Sunrise moves from 5:18 AM to 5:10 AM, and sunset from 5:49 PM to 5:57 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:185:49
212.55:185:49
312.55:175:49
412.55:175:50
512.65:165:50
612.65:165:50
712.65:155:50
812.65:155:51
912.65:155:51
1012.65:145:51
1112.65:145:51
1212.65:145:52
1312.65:135:52
1412.75:135:52
1512.75:135:52
1612.75:125:53
1712.75:125:53
1812.75:125:53
1912.75:125:54
2012.75:115:54
2112.75:115:54
2212.75:115:55
2312.75:115:55
2412.75:115:55
2512.75:115:55
2612.85:105:56
2712.85:105:56
2812.85:105:56
2912.85:105:57
3012.85:105:57
3112.85:105:57

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.36 kWh/m².

For context, solar energy here swings from a low near 5.77 kWh/m² to a high of 7.61 kWh/m² in April across the year — May's 7.36 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.5Intense
27.5Intense
37.5Intense
47.5Intense
57.5Intense
67.5Intense
77.5Intense
87.5Intense
97.5Intense
107.5Intense
117.5Intense
127.5Intense
137.4Intense
147.4Intense
157.4Intense
167.4Intense
177.4Intense
187.4Intense
197.4Intense
207.3Intense
217.3Intense
227.3Intense
237.3Intense
247.3Intense
257.2Intense
267.2Intense
277.2Intense
287.2Intense
297.2Intense
307.1Intense
317.1Intense
Planning a trip in May

Hazard calendar for Biltine

In seasonPeak

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

Biltine sees seasonal dust haze (March–October), heaviest in June.

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

Is May a good time to visit Biltine?

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

0.1
Sightseeing
12th-best month of the year
3.1
Beach & pool
12th-best month of the year

May is a weaker month for outdoor sightseeing in Biltine.

What to pack for Biltine in May

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

In May, Biltine sees daytime highs around 40°C and nights near 27°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Biltine 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 Biltine peaks around August 21 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeExtremeVery highAug 21UV 12Dec 16UV 8
UV index (midday)Level
Jan9Very high
Feb11Extreme
Mar11Extreme
Apr10Extreme
May10Extreme
Jun11Extreme
Jul10Very high
Aug12Extreme
Sep11Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Biltine 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 Biltine is worst in March — around 63 µg/m³ PM2.5 (unhealthy), about 2.8× the cleanest month (September, 22 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyPoorModerateMar 1761 µg/m³Sep 922 µg/m³
PM2.5 (µg/m³)Level
Jan37Poor
Feb48Poor
Mar63Unhealthy
Apr50Poor
May42Poor
Jun42Poor
Jul35Poor
Aug22Moderate
Sep22Moderate
Oct29Moderate
Nov25Moderate
Dec32Moderate
Location & terrain

Where is Biltine?

Biltine sits at 14.5°N, 20.9°E, 518 m above sea level, in Chad. The nearest listed city is Abéché, 78 km away.

IribaAdréUmm HājarEl Geneina FortAl-Junaynah'ĀrdamatāGoz Beida

Topography around Biltine

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

Within 3 km, the terrain around Biltine has only modest variations in elevation — a maximum elevation change of 159 m around an average of 516 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 398 m; within 80 km, large variations in elevation — a maximum elevation change of 773 m.

The land around Biltine is covered by grassland (58%) and bare terrain (37%) within 3 km, grassland (85%) within 16 km, and grassland (89%) within 80 km.

3 km
159 m
16 km
398 m
80 km
773 m
shrubsgrasslandcroplandartificial surfacesbare terrain
May weather nearby: Abéché 78 km · Iriba 157 km · Adré 181 km · Umm Hājar 191 km · El Geneina Fort 202 km · Al-Junaynah 203 km · 'Ārdamatā 205 km · Goz Beida 261 km

Chad travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type C / D / E / F
220 V · 50 Hz
Prices
≈ 35% of US
price level, 2025
GDP per capita
$1,022
2025
Happiness
4.4 / 10
World Happiness, 2025
Safe drinking water
6%
of population, 2024
Road deaths
32.4
per 100k/yr, 2019
Income group
Low
World Bank
Religion
Muslim 52%Protestant 24%Roman Catholic 20%none 3%

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 Biltine (14.5273°, 20.926°, elevation 518 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).