May weather forecast
Grand Valley Estate, Swaziland

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Weather in May

May in Grand Valley Estate marks numerous changes in weather dynamics, echoing the advancing of the local winter season. The plummeting temperatures, coupled with a more drastic reduction in rainfall to just 6mm (0.24"), create a remarkably dry atmosphere. This reduction in humidity precipitates a substantial increase in sunny days, although the overall sunlight duration doesn't vary noticeably from April. Interestingly, despite the drier conditions, the atmospheric pressure steadily rises as the town transitions into June. May's calm, sunny environment makes it an attractive month for outdoor enthusiasts.

Temperature

May begins with an average high-temperature of a still warm 23.8°C (74.8°F), reflecting close similarity to the preceding month. Grand Valley Estate logs a considerable temperature decrease from the daytime highs during the nights in May, with an average reading of 11.8°C (53.2°F).

Humidity

In Grand Valley Estate, the average relative humidity in May is 67%.

Rainfall

In May, the rain falls for 5.5 days. Throughout May, 6mm (0.24") of precipitation is accumulated. Throughout the year, there are 156.8 rainfall days, and 549mm (21.61") of precipitation is accumulated.

Daylight

The average length of the day in May is 10h and 48min.
On the first day of the month, sunrise is at 06:19 and sunset at 17:23. On the last day of May, sunrise is at 06:35 and sunset at 17:09 SAST.

Sunshine

The average sunshine in May is 7.4h.

UV index

The months with the lowest UV index are April through October, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: In May, the maximum UV index of 5 suggests these recommendations:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.

Frequently asked questions

What is the temperature in May?

In May, the average high-temperature and low-temperature are 23.8°C (74.8°F) and 11.8°C (53.2°F) respectively. The average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in February is computed to be 31°C (87.8°F).

What is the average humidity in May?

The average relative humidity in May is 67%.

How many days does it rain in May?

In Grand Valley Estate, during May, the rain falls for 5.5 days and regularly aggregates up to 6mm (0.24") of precipitation.

How many hours of daylight does Grand Valley Estate have in May?

In Grand Valley Estate, the average day length in May is 10h and 48min.

When are sunrise and sunset in May?

On the first day of May, sunrise is at 06:19 and sunset at 17:23. On the last day of the month, sunrise is at 06:35 and sunset at 17:09 SAST.

How long on average sun shines in May?

The average sunshine duration in May is 7.4h.

What is the month with the lowest UV index?

The months with the lowest UV index are April through October, with an average maximum UV index of 5.

What is the UV index intensity in May?

In Grand Valley Estate, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Grand Valley Estate, Swaziland

Average temperature in May - Grand Valley Estate, Swaziland
  • Average high temperature in May: 23.8°C

The warmest month (with the highest average high temperature) is December (27.5°C).
The month with the lowest average high temperature is July (21.4°C).

  • Average low temperature in May: 11.8°C

The month with the highest average low temperature is December (17.5°C).
The coldest month (with the lowest average low temperature) is July (9.3°C).

Average pressure in May
Grand Valley Estate, Swaziland

Average pressure in May - Grand Valley Estate, Swaziland
  • Average pressure in May: 1020.3mbar

The month with the highest atmospheric pressure is July (1024.1mbar).
The month with the lowest atmospheric pressure is January (1014mbar).

Average wind speed in May
Grand Valley Estate, Swaziland

Average wind speed in May - Grand Valley Estate, Swaziland
  • Average wind speed in May: 6.7km/h

The windiest month (with the highest average wind speed) is September (8.2km/h).
The calmest month (with the lowest average wind speed) is March (6.1km/h).

Average humidity in May
Grand Valley Estate, Swaziland

Average humidity in May - Grand Valley Estate, Swaziland
  • Average humidity in May: 67%

The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is August (57%).

Average rainfall in May
Grand Valley Estate, Swaziland

Average rainfall in May - Grand Valley Estate, Swaziland
  • Average rainfall in May: 6mm

The wettest month (with the highest rainfall) is December (110mm).
The driest month (with the least rainfall) is July (4mm).

Average rainfall days in May
Grand Valley Estate, Swaziland

Average rainfall days in May - Grand Valley Estate, Swaziland
  • Average rainfall days in May: 5.5 days

The month with the highest number of rainy days is December (22.7 days).
The month with the least rainy days is June (3.6 days).

Average daylight in May /
Average sunshine in May
Grand Valley Estate, Swaziland

Average daylight in May / Average sunshine in May - Grand Valley Estate, Swaziland
  • Average daylight in May: 10h and 5min

The month with the longest days is December (Average daylight: 13h and 48min).
The month with the shortest days is June (Average daylight: 10h and 30min).

  • Average sunshine in May: 7h and 2min

The month with the most sunshine is November (Average sunshine: 9h and 0min).
The month with the least sunshine is April (Average sunshine: 6h and 24min).

Average sunshine days in May
Grand Valley Estate, Swaziland

Average sunshine days in May - Grand Valley Estate, Swaziland
  • Average sunshine days in May: 23.8 days

The month with the most sunshine days is June (25.4 days).
The month with the least sunshine days is December (5.3 days).

Average UV index in May
Grand Valley Estate, Swaziland

Average UV index in May - Grand Valley Estate, Swaziland
  • Average UV index in May: 5

The months with the highest UV index are January, February, March, November and December (UV index 6).
The months with the lowest UV index are April, May, June, July, August, September and October (UV index 5).

Average cloud cover in May
Grand Valley Estate, Swaziland

Average cloud cover in May - Grand Valley Estate, Swaziland
  • Average cloud cover in May: 19

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is June (Cloud cover 14).

Average visibility in May
Grand Valley Estate, Swaziland

Average visibility in May - Grand Valley Estate, Swaziland
  • Average visibility in May: 9km

The months with the highest visibility are June, July and August (10km).
The months with the lowest visibility are January, February and March (7km).

Grand Valley Estate, Swaziland

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