Umm Hājar in Fall
In fall (September, October and November), Umm Hājar sees average daytime highs around 36°C and overnight lows near 23°C, with 74 mm of rain over about 13 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs climb from about 32°C in early September to 36°C by late November. The sky is clear or mostly clear about 59% of the time across fall, and the air most often feels dry.
Fall is Umm Hājar's 2nd-best season to visit on our travel score. For the whole year in context, see Umm Hājar's year-round climate.
- Avg daytime high
- 36°C
- 2nd-warmest season
- Avg overnight low
- 23°C
- Rainfall
- 74 mm
- 13 wet days
- Avg wind
- 8 km/h
- Travel score
- 2.1
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Umm Hājar in Fall
Over the season highs climb from about 32°C in early September to 36°C by late November.
A typical fall day in Umm Hājar reaches about 36°C and drops to 23°C overnight. The warmest of the three months is October, the coolest November.
How fall really feels in Umm Hājar
Once humidity and wind are folded in, fall brings about 91 days that feel above 32°C and 0 that feel at or below 0°C.
The story in fall is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Umm Hājar weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 33° / 17° | 0 | 0 | 11.3 | 4.4 |
| Feb | 36° / 20° | 0 | 0 | 11.6 | 2.6 |
| Mar | 39° / 23° | 0 | 0 | 11.9 | 0.5 |
| Apr | 41° / 26° | 2 | 1 | 12.3 | 0.0 |
| May | 41° / 28° | 10 | 3.1 | 12.6 | 0.0 |
| Jun | 39° / 27° | 24 | 7 | 12.8 | 0.5 |
| Jul | 35° / 25° | 117 | 18.2 | 12.7 | 2.0 |
| Aug | 32° / 23° | 217 | 23.6 | 12.4 | 2.8 |
| Sep | 34° / 24° | 67 | 10.9 | 12.1 | 2.7 |
| Oct | 38° / 24° | 8 | 2.3 | 11.7 | 1.4 |
| Nov | 37° / 22° | 0 | 0 | 11.4 | 2.2 |
| Dec | 34° / 18° | 0 | 0 | 11.2 | 3.9 |
Cloud cover in Fall
The sky is clear or mostly clear about 59% of the time across fall.
Chance of precipitation in Fall
Umm Hājar gets around 74 mm of rain over 13 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 8 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 18 min in early September to 11 h 18 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 6.2 kWh/m².
Hazard calendar for Umm Hājar
In fall, Umm Hājar overlaps its dust season. The full year is below, with each hazard's peak months called out.
Umm Hājar sees seasonal dust haze (March–October), heaviest in April.
Is fall a good time to visit Umm Hājar?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a weaker month for outdoor sightseeing in Umm Hājar.
What to pack for Umm Hājar in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Umm Hājar sees daytime highs around 36°C and nights near 23°C. Pack light clothes and sun protection. Worth having: rain gear. About 13 days see rain.
UV index in Umm Hājar in Fall
Clear-sky midday UV across fall averages 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 Umm Hājar peaks around August 16 at about 13 (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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 9 | 12 | 11 | 10 | 10 | 11 | 11 | 13 | 11 | 11 | 9 | 8 |
| Level | Very high | Extreme | Extreme | Extreme | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 9 | Very high |
| Feb | 12 | Extreme |
| Mar | 11 | Extreme |
| Apr | 10 | Extreme |
| May | 10 | Very high |
| Jun | 11 | Extreme |
| Jul | 11 | Extreme |
| Aug | 13 | Extreme |
| Sep | 11 | Extreme |
| Oct | 11 | Extreme |
| Nov | 9 | Very high |
| Dec | 8 | Very high |
Air quality in Umm Hājar in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in Umm Hājar is worst in March — around 71 µg/m³ PM2.5 (unhealthy), about 3.4× the cleanest month (September, 21 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 45 | 53 | 71 | 53 | 38 | 37 | 30 | 21 | 21 | 28 | 26 | 35 |
| Level | Poor | Poor | Unhealthy | Poor | Poor | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 45 | Poor |
| Feb | 53 | Poor |
| Mar | 71 | Unhealthy |
| Apr | 53 | Poor |
| May | 38 | Poor |
| Jun | 37 | Poor |
| Jul | 30 | Moderate |
| Aug | 21 | Moderate |
| Sep | 21 | Moderate |
| Oct | 28 | Moderate |
| Nov | 26 | Moderate |
| Dec | 35 | Moderate |
Where is Umm Hājar?
Umm Hājar sits at 13.3°N, 19.7°E, 397 m above sea level, in Chad. The nearest listed city is Mangalmé, 105 km away.
Topography around Umm Hājar
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Umm Hājar.
Within 3 km, the terrain around Umm Hājar has only modest variations in elevation — a maximum elevation change of 11 m around an average of 390 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 43 m; within 80 km, significant variations in elevation — a maximum elevation change of 295 m.
The land around Umm Hājar is covered by grassland (78%) within 3 km, grassland (91%) within 16 km, and grassland (92%) within 80 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
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 Umm Hājar (13.2954°, 19.6966°, elevation 397 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.