May weather forecastNgonini, Swaziland
May
Weather in May
In May, Ngonini experiences a further reduction in temperatures as they dip to a high of 25.7°C (78.3°F). This decline is mirrored in the rainfall experienced during the month, with quantities dropping to a mere 6mm (0.24"). Winds picking up speed and reaching 6.4km/h (4mph) adds a cooling effect. This month also sees the cloud cover reduced to 18%, ensuring clear, sunny days. While the reduced cloud cover increases visibility, it also implies that the UV Index remains at 5, stressing the need for sun protection.Temperature
Ngonini records a slight change with May's average high-temperatures adjusting to a still warm 25.7°C (78.3°F) from April's 26.2°C (79.2°F). From the heights of the May heat, Ngonini records a mean nighttime low of 13.3°C (55.9°F).Humidity
In Ngonini, the average relative humidity in May is 66%.Rainfall
In Ngonini, in May, during 5.7 rainfall days, 6mm (0.24") of precipitation is typically accumulated. In Ngonini, during the entire year, the rain falls for 138.5 days and collects up to 488mm (19.21") of precipitation.Daylight
The average length of the day in May in Ngonini is 10h and 52min.On the first day of May, sunrise is at 06:17 and sunset at 17:24. On the last day of the month, sunrise is at 06:33 and sunset at 17:11 SAST.
Sunshine
In May, the average sunshine is 7.3h.UV index
The months with the lowest UV index are April through August, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: In May, the average maximum UV index of 5 translates into the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Ngonini, Swaziland
- Average high temperature in May: 25.7°C
The warmest month (with the highest average high temperature) is December (29.1°C).
The month with the lowest average high temperature is July (23°C).
- Average low temperature in May: 13.3°C
The months with the highest average low temperature are January and February (19°C).
The coldest month (with the lowest average low temperature) is June (10.6°C).
Average pressure in May
Ngonini, Swaziland
- Average pressure in May: 1020.4mbar
The month with the highest atmospheric pressure is July (1024.1mbar).
The month with the lowest atmospheric pressure is January (1013.7mbar).
Average wind speed in May
Ngonini, Swaziland
- Average wind speed in May: 6.4km/h
The windiest month (with the highest average wind speed) is September (8.5km/h).
The calmest months (with the lowest average wind speed) are March and May (6.4km/h).
Average humidity in May
Ngonini, Swaziland
- Average humidity in May: 66%
The months with the highest relative humidity are January, February and March (78%).
The months with the lowest relative humidity are August and September (56%).
Average rainfall in May
Ngonini, Swaziland
- Average rainfall in May: 6mm
The wettest month (with the highest rainfall) is December (94mm).
The driest month (with the least rainfall) is July (2mm).
Average rainfall days in May
Ngonini, Swaziland
- Average rainfall days in May: 5.7 days
The month with the highest number of rainy days is December (20.5 days).
The month with the least rainy days is June (1.8 days).
Average daylight in May /
Average sunshine in May
Ngonini, Swaziland
- Average daylight in May: 10h and 54min
The month with the longest days is December (Average daylight: 13h and 42min).
The month with the shortest days is June (Average daylight: 10h and 36min).
- Average sunshine in May: 7h and 18min
The month with the most sunshine is February (Average sunshine: 9h and 18min).
The month with the least sunshine is April (Average sunshine: 6h and 24min).
Average sunshine days in May
Ngonini, Swaziland
- Average sunshine days in May: 23.8 days
The month with the most sunshine days is June (27.3 days).
The month with the least sunshine days is December (7.5 days).
Average UV index in May
Ngonini, Swaziland
- Average UV index in May: 5
The months with the highest UV index are January, February, March, September, October, November and December (UV index 6).
The months with the lowest UV index are April, May, June, July and August (UV index 5).
Average cloud cover in May
Ngonini, Swaziland
- Average cloud cover in May: 18
The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 13).
Average visibility in May
Ngonini, Swaziland
- Average visibility in May: 9km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, February, March and December (8km).





