May weather forecastNiamey, Niger

May
Weather in May
Come May, the environment in Niamey sees the onset of the much-awaited wet season, marking a weather pattern redesign as the dry and arid conditions begin to alleviate. The weather introduces the concept of rain, with the quantity peaking to 7mm (0.28"), making this the first rainfall-maximum month. Increased temperatures and higher humidity values indicate a transition from the dry to the wet season has commenced. Drastic transformation aside, the sun still shines bright for a significant 12.8 hours per day. Made possible by a slight pickup in wind speed this month, surprisingly, the climatic changes do not seem to reflect in wind behaviour.Temperature
On the advent of May, Niamey's average high-temperature exhibits a minor adjustment to a still blistering 41.8°C (107.2°F) from April's 42.2°C (108°F). Niamey records an average nighttime low of 30.4°C (86.7°F) in May.Humidity
The average relative humidity in May in Niamey is 28%.Rainfall
In Niamey, in May, during 3 rainfall days, 7mm (0.28") of precipitation is typically accumulated. Throughout the year, in Niamey, Niger, there are 34.7 rainfall days, and 99mm (3.9") of precipitation is accumulated.Daylight
In Niamey, the average length of the day in May is 12h and 46min.On the first day of May in Niamey, sunrise is at 06:29 and sunset at 19:07. On the last day of the month, sunrise is at 06:23 and sunset at 19:15 WAT.
Sunshine
In Niamey, the average sunshine in May is 9.8h.UV index
April and May, with an average maximum UV index of 9, are months with the highest UV index in Niamey, Niger. A UV Index estimate of 8 to 10 represents a very high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In May, an average UV index of 9 transforms into the following instructions:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Despite the overcast weather, sunscreen with SPF of at least 30 should be applied liberally and reapplied often, particularly after swimming or an outdoor workout.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Niamey, Niger
- Average high temperature in May: 41.8°C
The warmest month (with the highest average high temperature) is April (42.2°C).
The months with the lowest average high temperature are January and December (33.5°C).
- Average low temperature in May: 30.4°C
The month with the highest average low temperature is May (30.4°C).
The coldest month (with the lowest average low temperature) is January (16.9°C).
Average pressure in May
Niamey, Niger
- Average pressure in May: 1007.6mbar
The month with the highest atmospheric pressure is January (1012.8mbar).
The month with the lowest atmospheric pressure is April (1007mbar).
Average wind speed in May
Niamey, Niger
- Average wind speed in May: 13.2km/h
The windiest months (with the highest average wind speed) are January, July and December (14.7km/h).
The calmest month (with the lowest average wind speed) is October (10.4km/h).
Average humidity in May
Niamey, Niger
- Average humidity in May: 28%
The month with the highest relative humidity is August (55%).
The month with the lowest relative humidity is March (12%).
Average rainfall in May
Niamey, Niger
- Average rainfall in May: 7mm
The wettest month (with the highest rainfall) is August (42mm).
The driest months (with the least rainfall) are January, November and December (0mm).
Average rainfall days in May
Niamey, Niger
- Average rainfall days in May: 3 days
The month with the highest number of rainy days is August (9.1 days).
The months with the least rainy days are January and November (0 days).
Average daylight in May /
Average sunshine in May
Niamey, Niger
- Average daylight in May: 12h and 48min
The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 18min).
- Average sunshine in May: 9h and 48min
The months with the most sunshine are February, March, June, November and December (Average sunshine: 9h and 54min).
The month with the least sunshine is August (Average sunshine: 8h and 48min).
Average sunshine days in May
Niamey, Niger
- Average sunshine days in May: 26.9 days
The month with the most sunshine days is January (31 days).
The month with the least sunshine days is August (21.1 days).
Average UV index in May
Niamey, Niger
- Average UV index in May: 9
The months with the highest UV index are April and May (UV index 9).
The month with the lowest UV index is December (UV index 6).
Average cloud cover in May
Niamey, Niger
- Average cloud cover in May: 10
The month with the most cloud cover is August (Cloud cover 30).
The months with the least cloud cover are November and December (Cloud cover 4).
Average visibility in May
Niamey, Niger
- Average visibility in May: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).





