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 snowfall in May
- Average snowfall 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
Weather in May
Temperature
With the transition into May, Johannesburg experiences a subtle uplift in average high-temperatures, adjusting from an agreeable 70.7°F (21.5°C) in April to a warm 78.4°F (25.8°C). Johannesburg in May experiences a low-temperature average of 57.6°F (14.2°C).Humidity
The average relative humidity in May is 28%.Rainfall
In Johannesburg, in May, during 1.8 rainfall days, 0.12" (3mm) of precipitation is typically accumulated. In Johannesburg, during the entire year, the rain falls for 29.6 days and collects up to 2.64" (67mm) of precipitation.Snowfall
In Johannesburg, snow does not fall in January through October and December.Daylight
In May, the average length of the day is 14h and 2min.On the first day of the month, sunrise is at 5:57 am and sunset at 7:37 pm. On the last day of May, sunrise is at 5:36 am and sunset at 7:59 pm PDT.
Sunshine
The average sunshine in May in Johannesburg is 11.9h.UV index
The average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In May, the average maximum UV index of 6 translates into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the average humidity in May?
How many days does it rain in May?
When it does not snow?
How many hours of daylight does Johannesburg have in May?
What time are sunrise and sunset in May?
How many hours of sunshine does Johannesburg have in May?
What is the UV index reading in May?
Average temperature in May
Johannesburg, CA
- Average high temperature in May: 78.4°F
The warmest month (with the highest average high temperature) is July (95.9°F).
The month with the lowest average high temperature is December (52.5°F).
- Average low temperature in May: 57.6°F
The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is December (37.6°F).
Average pressure in May
Johannesburg, CA
- Average pressure in May: 29.86"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).
Average wind speed in May
Johannesburg, CA
- Average wind speed in May: 9.3mph
The windiest month (with the highest average wind speed) is May (9.3mph).
The calmest month (with the lowest average wind speed) is January (5.7mph).
Average humidity in May
Johannesburg, CA
- Average humidity in May: 28%
The month with the highest relative humidity is January (47%).
The month with the lowest relative humidity is August (20%).
Average rainfall in May
Johannesburg, CA
- Average rainfall in May: 0.12"
The wettest month (with the highest rainfall) is December (0.35").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in May
Johannesburg, CA
- Average rainfall days in May: 1.8 days
The month with the highest number of rainy days is July (4.5 days).
The month with the least rainy days is June (1.2 days).
Average snowfall in May
Johannesburg, CA
- Average snowfall in May: 0"
The month with the highest snowfall is November (0.83").
The months with the least snowfall are January, February, March, April, May, June, July, August, September, October and December (0").
Average snowfall days in May
Johannesburg, CA
- Average snowfall days in May: 0 days
The months with the highest number of snowfall days are January, February, November and December (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Johannesburg, CA
- Average daylight in May: 14h and 0min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in May: 11h and 5min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The months with the least sunshine are January and December (Average sunshine: 7h and 6min).
Average sunshine days in May
Johannesburg, CA
- Average sunshine days in May: 27.7 days
The month with the most sunshine days is December (28.1 days).
The month with the least sunshine days is July (23.2 days).
Average UV index in May
Johannesburg, CA
- Average UV index in May: 6
The month with the highest UV index is July (UV index 8).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover in May
Johannesburg, CA
- Average cloud cover in May: 9
The months with the most cloud cover are January, March and December (Cloud cover 17).
The month with the least cloud cover is September (Cloud cover 4).
Average visibility in May
Johannesburg, CA
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Johannesburg, California, USA
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