May weather forecastMacnab, Swaziland

May

Weather in May

Coming into May, the weather in Macnab, Swaziland presents a marked shift toward drier and cooler conditions. The monthly temperature varies from 11.8°C (53.2°F) to 23.8°C (74.8°F), maintaining the cooler trend instigated in April. In a testament to the drier climate, May only observes rainfall on an average of 5.5 days, the lowest until this point in the year. A significant difference is evident in the relative humidity levels, lowered to a median of 67%, indicating fewer moisture-laden days. Despite the cooler temperatures and declining humidity, the city enjoys a well-spread out 10.8 hours of daylight with an increase in sunshine hours to 7.4.

Temperature

Macnab measures an average high-temperature of a still moderately hot 23.8°C (74.8°F) in May, nearly consistent with the preceding month. May is characterized by a distinct thermal shift, with nighttime lows averaging at a fresh 11.8°C (53.2°F).

Humidity

The average relative humidity in May is 67%.

Rainfall

In Macnab, in May, during 5.5 rainfall days, 6mm (0.24") of precipitation is typically 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 50min.
On the first day of May, sunrise is at 06:17 and sunset at 17:23. On the last day of the month, sunrise is at 06:33 and sunset at 17:09 SAST.

Sunshine

In May, the average sunshine 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 value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index, 5 in May, converts into the following recommendations:
Act with care - The need to guard against sun damage is communicated. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.

Updated: Jun 3, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in May, in Macnab, records 23.8°C (74.8°F), while the low-temperature is 11.8°C (53.2°F). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in February is estimated at 31°C (87.8°F).

In Macnab, the average relative humidity in May is 67%.

In Macnab, in May, it is raining for 5.5 days, with typically 6mm (0.24") of accumulated precipitation.

The average day length in May is 10h and 50min.

In May, on the first day of the month, sunrise is at 06:17 and sunset at 17:23. On the last day of the month, sunrise is at 06:33 and sunset at 17:09 SAST.

In May, the average sunshine duration is 7.4h.

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

In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A May J J A S O N D

Apr

May

Jun

Average high temperature

24.3°C

23.8°C

21.7°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

7.1km/h

7.5km/h

8.7km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

13.7

23.8

25.4

Average UV index

Average cloud cover

Average visibility

Average temperature in May
Macnab, 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
Macnab, 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
Macnab, 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
Macnab, 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
Macnab, 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
Macnab, 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
Macnab, Swaziland

Average daylight in May: 10h and 48min

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 24min

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
Macnab, 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
Macnab, 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).