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Contents
- The climate of Iriba
- The best time to visit Iriba
- The worst time to visit Iriba
- Spring weather in Iriba
- Summer weather in Iriba
- Autumn weather in Iriba
- Winter weather in Iriba
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Climate and monthly weather forecast
The climate of Iriba
Located in Chad, Iriba experiences a BWh or subtropical desert climate according to the Köppen climate classification. The subtropical desert climate is typically warm to hot all year round, with significant temperature variations between day and night.
Throughout the year, Iriba experiences high temperatures ranging from 30.5°C (86.9°F) to a sweltering 38.3°C (100.9°F) and low temperatures fluctuating between 14.2°C (57.6°F) and 26.2°C (79.2°F). Relative humidity is generally low, ranging from 13 to 66% on average, resulting in a dry, arid atmosphere. The visibility is consistently good, averaging 10km (6.2mi) throughout the year.
Iriba receives minimal rainfall in a year, with the majority of the rain falling between May to August. The highest amount of rainfall is recorded at 197mm (7.76") in August. The number of rainfall days increases dramatically from May, peaking in August with 23.3 days.
Among the unique weather patterns in Iriba is the significant difference between day and night temperatures, and the concentrated rainfall during mid-year, with virtually no rainfall from September to April.
Throughout the year, Iriba experiences high temperatures ranging from 30.5°C (86.9°F) to a sweltering 38.3°C (100.9°F) and low temperatures fluctuating between 14.2°C (57.6°F) and 26.2°C (79.2°F). Relative humidity is generally low, ranging from 13 to 66% on average, resulting in a dry, arid atmosphere. The visibility is consistently good, averaging 10km (6.2mi) throughout the year.
Iriba receives minimal rainfall in a year, with the majority of the rain falling between May to August. The highest amount of rainfall is recorded at 197mm (7.76") in August. The number of rainfall days increases dramatically from May, peaking in August with 23.3 days.
Among the unique weather patterns in Iriba is the significant difference between day and night temperatures, and the concentrated rainfall during mid-year, with virtually no rainfall from September to April.
The best time to visit Iriba
Given the subtropical desert climate of Iriba, the best time to visit would primarily depend on individual heat tolerance. Generally, the cooler months from December through to February present the most comfortable climatic conditions for a visit. During these months, the high temperatures range from 30.5°C (86.9°F) to 34.6°C (94.3°F) and the low temperatures range from 14.2°C (57.6°F) to 19.5°C (67.1°F). The relative humidity is on the lower end of the scale, and the number of sunshine hours is consistently high, with 10 hours per day on average.
The worst time to visit Iriba
Unless heat and high humidity are favored, the months of May through to August may prove quite challenging for visitors. During this period, temperatures can reach a high of 38.3°C (100.9°F) and a low of 26.2°C (79.2°F). Additionally, rainfall is at its peak, particularly in August when rainfall amounts to 197mm (7.76").
Spring weather in Iriba
Considering Iriba's subtropical desert climate, the region does not experience true spring weather. However, March and April are transitional months, which move from the cooler winter months to the hotter and more humid summer months. High temperatures climb from 36.7°C (98.1°F) in March up to 38.3°C (100.9°F) in April; meanwhile, lows rise from 19.5°C (67.1°F) to 21.8°C (71.2°F). Rainfall is rare, with only 1mm (0.04") falling in April over a period of 1.5 days on average.
Summer weather in Iriba
Summer in Iriba, which spans May to August, brings more extreme temperatures, which peak at 38°C (100.4°F). The lowest temperatures still remain quite high, between 24.3°C (75.7°F) and 26.2°C (79.2°F). The amount of rainfall increases significantly, especially from June onwards with maximum rainfall recorded in August at 197mm (7.76") spread over 23.3 days.
Autumn weather in Iriba
Iriba does not have a traditional autumn, but September and October can be considered as transitional months as they mark the shift from the wet and hot summer to the drier and cooler winter. High temperatures in these months range from 34.3°C (93.7°F) to 33.3°C (91.9°F) and lows from 24.1°C (75.4°F) to 19.6°C (67.3°F). Rainfall decreases dramatically across this period, from 54mm (2.13") in September to 11mm (0.43") in October.
Winter weather in Iriba
Winter months in Iriba, from November to February, are characterized by cooler temperatures and virtually no rainfall. High temperatures fluctuate from 32.8°C (91°F) in November to a mild 30.5°C (86.9°F) in both December and February. Low temperatures, on the other hand, drop from 19.6°C (67.3°F) in November to 14.2°C (57.6°F) in December and rise to 14.9°C (58.8°F) by February. These months exhibit the least relative humidity, making it the driest period for Iriba.
Weather in January
January in Iriba, Chad is characterized by a modest daylight length of 11.4 hours and temperatures ranging from 14.2°C (57.6°F) to 31.6°C (88.9°F). The month brings a fresh breeze, with wind speeds hitting up to 17.4km/h (10.8mph) indicating a relatively windier environment compared to the remaining seasons. Weather in January »
Weather in February
As the second month rolls in, February ushers in the early signs of summer for Iriba. Temperatures tend to climb a bit higher, though they never exceed 34.6°C (94.3°F). Relative humidity is slightly lower than the previous month, leading to even drier conditions. Weather in February »
Weather in March
March indicates further progression into summer with marginally warmer temperatures. The city's weather starts to experience slight changes, notably shifting winds. Wind speeds striking a balance at 16.6km/h (10.3mph) demonstrate a calming influence of the wind compared to the start of the year. Weather in March »
Weather in April
April sees Iriba firmly rooted in the summer season, with the temperature soaring up to 38.3°C (100.9°F). These hotter conditions coincide with longer days, contributing to the overall feel of summer. Despite occasional clouds, visibility remains mostly unobstructed throughout the month. Weather in April »
Weather in May
Advancing to May, the heat continues to persist in Iriba, albeit at slightly cooler levels. The summer season begins to recede, giving way to the start of a sporadic wet season. However, it is the increased cloud cover that is the defining characteristic of the month, accounting for 9% of the sky. Weather in May »
Weather in June
As summer transitions towards the rainy season in June, Iriba starts experiencing a substantial increase in humidity, rising to 32%. The cooling rain showers bring relief from the scorching heat. Despite the onset of the rainy season, the city still manages to enjoy a decent amount of sunshine. Weather in June »
Weather in July
July marks the height of the rainy season in Iriba, with precipitation levels peaking at 97mm (3.82") over a span of 17.9 days. Yet, sunlight is not scarce as the city benefits from just over 9 hours of sunshine daily. Winds retain a mild velocity providing a soothing effect against the humidity. Weather in July »
Weather in August
August stands as the rainiest month in Iriba with a whopping 197mm (7.76") over 23.3 days. Despite the rain, the city's temperature stays comfortable, never falling below 22.9°C (73.2°F). The slight drop in daylight hours and the increased cloud cover may affect outdoor plans. Weather in August »
Weather in September
As September rolls in, Iriba begins to witness a decline in rainfall, signaling the end of the heavy rains. Apart from the lessened precipitation, the city experiences a receding cloud cover percentage, paving the way for more radiant days. Weather in September »
Weather in October
October brings the return of summer as Iriba transitions away from the rainy season. The month sees a rapid drop in humidity levels to 28% under a typically clear sky. A significant decrease in rainfall indicates virtually dry conditions across the city. Weather in October »
Weather in November
November consolidates the arrival of summer in Iriba. An increase in wind speeds to 14.9km/h (9.3mph) and reduced rainfall re-establishes the dry phase of the year. The extended daylight hours and stable UV index make it conducive for outdoor activities. Weather in November »
Weather in December
Concluding the year, December remains a predominantly warm month in Iriba. The blend of warm daytime temperatures and cool evenings make it a comfortable period. With no rainfall, visitors can expect a dry and clear month perfect for sightseeing. Weather in December »
Updated: Feb 5, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the driest month in Iriba?
In Iriba, rain does not fall in January through March, November and December.
How much does it rain in Iriba?
Throughout the year, 392mm (15.43") of rain is accumulated.
What is the month with the most sunshine in Iriba?
The months with the most sunshine are January through March, November and December, with an average of 10h of sunshine.
What is the month with the lowest UV index in Iriba?
The months with the lowest UV index are January, November and December, with an average maximum UV index of 6.
What is the least humid month in Iriba?
With an average relative humidity of 13%, March is the least humid month in Iriba, Chad.
What part of the year is the hottest in Iriba?
April registers as the month with the average highest temperatures in Iriba, Chad, reaching 38.3°C (100.9°F) at its peak and 21.8°C (71.2°F) at the lowest.
When does it rain in Iriba?
Months with rainfall in Iriba are April through October.
When is the highest UV index in Iriba?
April and May, with an average maximum UV index of 8, are months with the highest UV index.
When are the longest days in Iriba?
The month with the longest days is June, with an average of 13h and 0min of daylight.
What time of the year is the coldest in Iriba?
The months of August and December bring the lowest temperatures in Iriba, averaging a high of 30.5°C (86.9°F).
What is the most humid month in Iriba?
August is the most humid month, with an average relative humidity of 66%.
What is the rainiest month in Iriba?
The month with the most rainfall is August, when the rain falls for 23.3 days and typically aggregates up to 197mm (7.76") of precipitation.
What is the month with the least sunshine in Iriba?
With an average of 8.5h of sunshine, August has the least sunshine of the year in Iriba, Chad.
What is the month with the shortest days in Iriba?
With an average of 11h and 18min of daylight, December has the shortest days of the year in Iriba.
Is there Daylight Saving Time (DST) in Iriba?
Iriba, Chad, does not utilize Daylight Saving Time (DST). WAT timezone is used throughout the entire year.
Average temperature
Iriba, Chad
The warmest month (with the highest average high temperature) is April (38.3°C).
The months with the lowest average high temperature are August and December (30.5°C).
The month with the highest average low temperature is June (26.2°C).
The coldest month (with the lowest average low temperature) is January (14.2°C).
Average pressure
Iriba, Chad
- Average pressure in January:
1013.2mbar - Average pressure in February:
1010.9mbar - Average pressure in March:
1009.6mbar - Average pressure in April:
1008.5mbar - Average pressure in May:
1008.8mbar - Average pressure in June:
1009.7mbar
- Average pressure in July:
1010.8mbar - Average pressure in August:
1011.2mbar - Average pressure in September:
1010.6mbar - Average pressure in October:
1010.1mbar - Average pressure in November:
1011.3mbar - Average pressure in December:
1013.3mbar
The month with the highest atmospheric pressure is December (1013.3mbar).
The month with the lowest atmospheric pressure is April (1008.5mbar).
Average wind speed
Iriba, Chad
- Average wind speed in January:
16.4km/h - Average wind speed in February:
17.4km/h - Average wind speed in March:
16.6km/h - Average wind speed in April:
14.8km/h - Average wind speed in May:
12.5km/h - Average wind speed in June:
12.4km/h
- Average wind speed in July:
14.4km/h - Average wind speed in August:
11.8km/h - Average wind speed in September:
10.2km/h - Average wind speed in October:
12km/h - Average wind speed in November:
14.9km/h - Average wind speed in December:
17.1km/h
The windiest month (with the highest average wind speed) is February (17.4km/h).
The calmest month (with the lowest average wind speed) is September (10.2km/h).
Average humidity
Iriba, Chad
The month with the highest relative humidity is August (66%).
The month with the lowest relative humidity is March (13%).
Average rainfall
Iriba, Chad
The wettest month (with the highest rainfall) is August (197mm).
The driest months (with the least rainfall) are January, February, March, November and December (0mm).
Average rainfall days
Iriba, Chad
- Average rainfall days in January:
0 days - Average rainfall days in February:
0.1 days - Average rainfall days in March:
0.3 days - Average rainfall days in April:
1.5 days - Average rainfall days in May:
1.5 days - Average rainfall days in June:
5.8 days
- Average rainfall days in July:
17.9 days - Average rainfall days in August:
23.3 days - Average rainfall days in September:
11.2 days - Average rainfall days in October:
3 days - Average rainfall days in November:
0.1 days - Average rainfall days in December:
0 days
The month with the highest number of rainy days is August (23.3 days).
The months with the least rainy days are January and December (0 days).
Average daylight / Average sunshine
Iriba, Chad
- Average daylight in January:
11h and 2min - Average daylight in February:
11h and 4min - Average daylight in March:
12h and 1min - Average daylight in April:
12h and 3min - Average daylight in May:
12h and 5min - Average daylight in June:
13h and 0min
- Average daylight in July:
12h and 5min - Average daylight in August:
12h and 4min - Average daylight in September:
12h and 1min - Average daylight in October:
11h and 5min - Average daylight in November:
11h and 2min - Average daylight in December:
11h and 2min
The month with the longest days is June (Average daylight: 13h and 0min).
The month with the shortest days is December (Average daylight: 11h and 18min).
- Average sunshine in January:
10h and 0min - Average sunshine in February:
10h and 0min - Average sunshine in March:
10h and 0min - Average sunshine in April:
9h and 5min - Average sunshine in May:
9h and 5min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
9h and 0min - Average sunshine in August:
8h and 3min - Average sunshine in September:
9h and 4min - Average sunshine in October:
9h and 5min - Average sunshine in November:
10h and 0min - Average sunshine in December:
10h and 0min
The months with the most sunshine are January, February, March, November and December (Average sunshine: 10h and 0min).
The month with the least sunshine is August (Average sunshine: 8h and 30min).
Average sunshine days
Iriba, Chad
- Average sunshine days in January:
31 days - Average sunshine days in February:
28.2 days - Average sunshine days in March:
30.9 days - Average sunshine days in April:
28.8 days - Average sunshine days in May:
28.7 days - Average sunshine days in June:
23.4 days
- Average sunshine days in July:
12.2 days - Average sunshine days in August:
6.5 days - Average sunshine days in September:
17.8 days - Average sunshine days in October:
27 days - Average sunshine days in November:
29.9 days - Average sunshine days in December:
31 days
The months with the most sunshine days are January and December (31 days).
The month with the least sunshine days is August (6.5 days).
Average UV index
Iriba, Chad
The months with the highest UV index are April and May (UV index 8).
The months with the lowest UV index are January, November and December (UV index 6).
Average cloud cover
Iriba, Chad
The month with the most cloud cover is August (Cloud cover 37).
The months with the least cloud cover are January, November and December (Cloud cover 1).
Average visibility
Iriba, Chad
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (10km).
The month with the lowest visibility is August (9km).
