Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
May
Weather in May
Temperature
May's onset records a minor alteration in the average high-temperature to a still agreeable 21°C (69.8°F) from April's 22.6°C (72.7°F). During May, the temperature tends to dip to an average of 9.7°C (49.5°F) at night.Humidity
In Isando, the average relative humidity in May is 48%.Rainfall
In Isando, in May, it is raining for 2.6 days, with typically 3mm (0.12") of accumulated precipitation. In Isando, South Africa, during the entire year, the rain falls for 115.7 days and collects up to 418mm (16.46") of precipitation.Daylight
The average length of the day in May in Isando is 10h and 50min.On the first day of May in Isando, sunrise is at 06:31 and sunset at 17:37. On the last day of the month, sunrise is at 06:46 and sunset at 17:23 SAST.
Sunshine
In Isando, the average sunshine in May is 7.7h.UV index
The months with the lowest UV index are May through July, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 4 in May translates into the following instructions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Isando in May?
What is the average humidity in May in Isando?
How much does it rain in Isando in May?
What is the average length of the day in May in Isando?
When is the sunrise / sunset in May in Isando?
How long on average sun shines in May in Isando?
What is the month with the lowest UV index in Isando?
What is the UV index reading in May in Isando?
Average temperature in May
Isando, South Africa
- Average high temperature in May: 21°C
The warmest month (with the highest average high temperature) is January (27.1°C).
The month with the lowest average high temperature is July (17.6°C).
- Average low temperature in May: 9.7°C
The months with the highest average low temperature are January and December (16°C).
The coldest month (with the lowest average low temperature) is July (5.9°C).
Average pressure in May
Isando, South Africa
- Average pressure in May: 1021.2mbar
The month with the highest atmospheric pressure is July (1024.7mbar).
The month with the lowest atmospheric pressure is January (1013.3mbar).
Average wind speed in May
Isando, South Africa
- Average wind speed in May: 8km/h
The windiest months (with the highest average wind speed) are October and November (11.6km/h).
The calmest month (with the lowest average wind speed) is May (8km/h).
Average humidity in May
Isando, South Africa
- Average humidity in May: 48%
The months with the highest relative humidity are January and February (65%).
The month with the lowest relative humidity is September (35%).
Average rainfall in May
Isando, South Africa
- Average rainfall in May: 3mm
The wettest month (with the highest rainfall) is January (86mm).
The driest month (with the least rainfall) is July (0mm).
Average rainfall days in May
Isando, South Africa
- Average rainfall days in May: 2.6 days
The month with the highest number of rainy days is January (20.3 days).
The month with the least rainy days is July (0.9 days).
Average daylight in May /
Average sunshine in May
Isando, South Africa
- Average daylight in May: 10h and 5min
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 30min).
- Average sunshine in May: 7h and 4min
The month with the most sunshine is October (Average sunshine: 11h and 48min).
The month with the least sunshine is August (Average sunshine: 7h and 24min).
Average sunshine days in May
Isando, South Africa
- Average sunshine days in May: 27.7 days
The month with the most sunshine days is July (29.7 days).
The month with the least sunshine days is January (8 days).
Average UV index in May
Isando, South Africa
- Average UV index in May: 4
The months with the highest UV index are January, October and November (UV index 6).
The months with the lowest UV index are May, June and July (UV index 4).
Average cloud cover in May
Isando, South Africa
- Average cloud cover in May: 9
The month with the most cloud cover is January (Cloud cover 28).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in May
Isando, South Africa
- Average visibility in May: 10km
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January and February (9km).
