Iriba in Fall
In fall (September, October and November), Iriba sees average daytime highs around 32°C and overnight lows near 19°C, with 21 mm of rain over about 4 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 33°C in early September to 28°C by late November. The sky is clear or mostly clear about 76% of the time across fall, and the air most often feels dry.
Fall is Iriba's 2nd-best season to visit on our travel score. For the whole year in context, see Iriba's year-round climate.
- Avg daytime high
- 32°C
- 3rd-warmest season
- Avg overnight low
- 19°C
- Rainfall
- 21 mm
- 4 wet days
- Avg wind
- 14 km/h
- Travel score
- 4.9
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Iriba in Fall
Over the season highs ease from about 33°C in early September to 28°C by late November.
A typical fall day in Iriba reaches about 32°C and drops to 19°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Iriba
Once humidity and wind are folded in, fall brings about 58 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.
Iriba 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 | 26° / 11° | 0 | 0 | 11.2 | 9.1 |
| Feb | 28° / 13° | 0 | 0 | 11.5 | 7.9 |
| Mar | 32° / 17° | 0 | 0 | 11.9 | 5.3 |
| Apr | 36° / 21° | 0 | 0.1 | 12.3 | 3.0 |
| May | 37° / 23° | 2 | 0.6 | 12.7 | 2.0 |
| Jun | 37° / 23° | 7 | 1.6 | 12.9 | 2.1 |
| Jul | 34° / 22° | 83 | 13.1 | 12.8 | 3.1 |
| Aug | 32° / 21° | 127 | 17.2 | 12.5 | 3.7 |
| Sep | 34° / 22° | 20 | 3.8 | 12.1 | 3.3 |
| Oct | 34° / 21° | 1 | 0.2 | 11.7 | 4.3 |
| Nov | 29° / 16° | 0 | 0 | 11.3 | 7.2 |
| Dec | 26° / 11° | 0 | 0 | 11.1 | 9.0 |
Cloud cover in Fall
The sky is clear or mostly clear about 76% of the time across fall.
Chance of precipitation in Fall
Iriba gets around 21 mm of rain over 4 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 14 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 18 min in early September to 11 h 12 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 6.5 kWh/m².
Hazard calendar for Iriba
In fall, Iriba overlaps its dust season. The full year is below, with each hazard's peak months called out.
Iriba sees seasonal dust haze (March–October), heaviest in May.
Is fall a good time to visit Iriba?
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 reasonable time to visit Iriba for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Iriba in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Iriba sees daytime highs around 32°C and nights near 19°C. Pack light clothes and sun protection.
UV index in Iriba in Fall
Clear-sky midday UV across fall averages around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Iriba peaks around May 14 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 7 (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 | 11 | 11 | 12 | 13 | 11 | 10 | 11 | 12 | 11 | 9 | 7 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Extreme | Extreme | Extreme | Very high | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 9 | Very high |
| Feb | 11 | Extreme |
| Mar | 11 | Extreme |
| Apr | 12 | Extreme |
| May | 13 | Extreme |
| Jun | 11 | Extreme |
| Jul | 10 | Very high |
| Aug | 11 | Extreme |
| Sep | 12 | Extreme |
| Oct | 11 | Extreme |
| Nov | 9 | Very high |
| Dec | 7 | High |
Air quality in Iriba 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 Iriba is worst in March — around 70 µg/m³ PM2.5 (unhealthy), about 2.5× the cleanest month (August, 29 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) | 54 | 63 | 70 | 56 | 51 | 45 | 41 | 29 | 33 | 46 | 37 | 49 |
| Level | Poor | Unhealthy | Unhealthy | Unhealthy | Poor | Poor | Poor | Moderate | Moderate | Poor | Poor | Poor |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 54 | Poor |
| Feb | 63 | Unhealthy |
| Mar | 70 | Unhealthy |
| Apr | 56 | Unhealthy |
| May | 51 | Poor |
| Jun | 45 | Poor |
| Jul | 41 | Poor |
| Aug | 29 | Moderate |
| Sep | 33 | Moderate |
| Oct | 46 | Poor |
| Nov | 37 | Poor |
| Dec | 49 | Poor |
Where is Iriba?
Iriba sits at 15.1°N, 22.3°E, 932 m above sea level, in Chad. The nearest listed city is Amdjarass, 123 km away.
Topography around Iriba
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Iriba.
Within 3 km, the terrain around Iriba has only modest variations in elevation — a maximum elevation change of 46 m around an average of 926 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 154 m; within 80 km, large variations in elevation — a maximum elevation change of 683 m.
The land around Iriba is covered by grassland (54%) and bare terrain (43%) within 3 km, grassland (68%) and bare terrain (30%) within 16 km, and grassland (66%) and bare terrain (30%) 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 Iriba (15.1167°, 22.25°, elevation 932 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.