May weather forecastRusayl, Oman
May
Weather in May
May represents the zenith of Rusayl's summer with the city hitting its highest temperature points, a sizzling 37.7°C (99.9°F) is seen during the day. Despite the sharp increase in temperatures, the wind speed reaches a high for the year, providing some relief through air movement. The cloud cover dwindles to its lowest, with only scant rainfall to provide a broken respite from the sweltering heat. Hours of sunlight also reach an annual high, thereby reinforcing the summer narrative. The forthcoming month, June, sustains this fierce summer character, although with slight shifts in certain parameters.Temperature
The commencement of May in Rusayl, Oman, sees a minor shift in the average high-temperature, moving from a tropical 33.2°C (91.8°F) in April to a sweltering 37.7°C (99.9°F). Rusayl records an average nighttime low of 30.3°C (86.5°F) in May.Humidity
The least humid month is May, with an average relative humidity of 33%.Rainfall
In Rusayl, during May, the rain falls for 1.3 days and regularly aggregates up to 3mm (0.12") of precipitation. Throughout the year, there are 25.2 rainfall days, and 51mm (2.01") of precipitation is accumulated.Daylight
In May, the average length of the day in Rusayl is 13h and 17min.On the first day of May, sunrise is at 05:33 and sunset at 18:35. On the last day of the month, sunrise is at 05:20 and sunset at 18:49 +04.
Sunshine
The months with the most sunshine are May and August, with an average of 12.3h of sunshine.UV index
May is the month with the highest UV index, with an average maximum UV index of 9. A UV Index reading of 8 to 10 represents a very high health hazard from unsafe exposure to UV radiation for the average person.Note: The daily maximum UV index of 9 in May interprets into the following advice:
Ensure safety measures are in place, as skin and eyes are vulnerable to quick damage. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Always opt for UVA and UVB-resistant sunglasses on radiant days. Even when it's cloudy, ensure the generous application and frequent reapplication of a sunscreen with at least 30 SPF, particularly post swim or outdoor activity.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Rusayl, Oman
- Average high temperature in May: 37.7°C
The warmest month (with the highest average high temperature) is June (38.4°C).
The month with the lowest average high temperature is January (23.5°C).
- Average low temperature in May: 30.3°C
The months with the highest average low temperature are June and July (31.1°C).
The coldest month (with the lowest average low temperature) is January (17.3°C).
Average pressure in May
Rusayl, Oman
- Average pressure in May: 1006mbar
The month with the highest atmospheric pressure is January (1017.3mbar).
The month with the lowest atmospheric pressure is July (998mbar).
Average wind speed in May
Rusayl, Oman
- Average wind speed in May: 11.1km/h
The windiest month (with the highest average wind speed) is May (11.1km/h).
The calmest month (with the lowest average wind speed) is December (8.1km/h).
Average humidity in May
Rusayl, Oman
- Average humidity in May: 33%
The month with the highest relative humidity is January (58%).
The month with the lowest relative humidity is May (33%).
Average rainfall in May
Rusayl, Oman
- Average rainfall in May: 3mm
The wettest month (with the highest rainfall) is January (9mm).
The driest month (with the least rainfall) is September (0mm).
Average rainfall days in May
Rusayl, Oman
- Average rainfall days in May: 1.3 days
The month with the highest number of rainy days is March (4.3 days).
The month with the least rainy days is September (0.1 days).
Average daylight in May /
Average sunshine in May
Rusayl, Oman
- Average daylight in May: 13h and 18min
The month with the longest days is June (Average daylight: 13h and 36min).
The month with the shortest days is December (Average daylight: 10h and 42min).
- Average sunshine in May: 12h and 18min
The months with the most sunshine are May and August (Average sunshine: 12h and 18min).
The month with the least sunshine is January (Average sunshine: 7h and 30min).
Average sunshine days in May
Rusayl, Oman
- Average sunshine days in May: 29 days
The month with the most sunshine days is September (29.9 days).
The month with the least sunshine days is February (25.1 days).
Average UV index in May
Rusayl, Oman
- Average UV index in May: 9
The month with the highest UV index is May (UV index 9).
The months with the lowest UV index are January, February, November and December (UV index 6).
Average cloud cover in May
Rusayl, Oman
- Average cloud cover in May: 4
The months with the most cloud cover are March and April (Cloud cover 9).
The month with the least cloud cover is September (Cloud cover 2).
Average visibility in May
Rusayl, Oman
- Average visibility in May: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).





