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
With May's arrival, Greffin notes an average high-temperature of a still moderately hot 29.1°C (84.4°F), closely following the trend of the preceding month. Greffin's average low-temperature during May nights is observed to be a pleasant 20.6°C (69.1°F).Heat index
For May, the heat index is evaluated at a tropical 34°C (93.2°F). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.Observations indicate that the heat index values are for shady locations with light wind. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', evaluates the perceived heat by adding the effect of moisture in the air. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
Humidity
In May, the average relative humidity is 75%.Rainfall
In Greffin, in May, during 24.3 rainfall days, 141mm (5.55") of precipitation is typically accumulated. Throughout the year, in Greffin, there are 228 rainfall days, and 913mm (35.94") of precipitation is accumulated.Daylight
In May, the average length of the day is 13h and 1min.On the first day of May in Greffin, sunrise is at 06:21 and sunset at 19:10. On the last day of the month, sunrise is at 06:11 and sunset at 19:21 EDT.
Sunshine
In Greffin, the average sunshine in May is 10.6h.UV index
The months with the lowest UV index in Greffin are January through May, July through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high UV index of 6 in May translates into the following recommendations:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Greffin in May?
What is the average humidity in May in Greffin?
How much does it rain in Greffin in May?
How many hours of daylight does Greffin have in May?
When is the sunrise / sunset in May in Greffin?
How many hours of sunshine does Greffin have in May?
When is the lowest UV index in Greffin?
What is the UV index intensity in May in Greffin?
Average temperature in May
Greffin, Haiti
- Average high temperature in May: 29.1°C
The warmest month (with the highest average high temperature) is August (30.9°C).
The month with the lowest average high temperature is January (27.6°C).
- Average low temperature in May: 20.6°C
The month with the highest average low temperature is August (21.3°C).
The coldest month (with the lowest average low temperature) is January (18.2°C).
Average pressure in May
Greffin, Haiti
- Average pressure in May: 1014.6mbar
The month with the highest atmospheric pressure is January (1016.3mbar).
The month with the lowest atmospheric pressure is October (1012.5mbar).
Average wind speed in May
Greffin, Haiti
- Average wind speed in May: 7.8km/h
The windiest month (with the highest average wind speed) is June (9.2km/h).
The calmest month (with the lowest average wind speed) is September (6.3km/h).
Average humidity in May
Greffin, Haiti
- Average humidity in May: 75%
The month with the highest relative humidity is November (80%).
The month with the lowest relative humidity is February (72%).
Average rainfall in May
Greffin, Haiti
- Average rainfall in May: 141mm
The wettest month (with the highest rainfall) is September (144mm).
The driest month (with the least rainfall) is January (12mm).
Average rainfall days in May
Greffin, Haiti
- Average rainfall days in May: 24.3 days
The months with the highest number of rainy days are April and October (24.4 days).
The month with the least rainy days is January (9.9 days).
Average daylight in May /
Average sunshine in May
Greffin, Haiti
- Average daylight in May: 13h and 0min
The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 0min).
- Average sunshine in May: 10h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is February (Average sunshine: 7h and 12min).
Average sunshine days in May
Greffin, Haiti
- Average sunshine days in May: 5.1 days
The month with the most sunshine days is December (19 days).
The month with the least sunshine days is April (3.3 days).
Average UV index in May
Greffin, Haiti
- Average UV index in May: 6
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, March, April, May, July, August, September, October, November and December (UV index 6).
Average cloud cover in May
Greffin, Haiti
- Average cloud cover in May: 32
The month with the most cloud cover is April (Cloud cover 35).
The month with the least cloud cover is December (Cloud cover 21).
Average visibility in May
Greffin, Haiti
- Average visibility in May: 9km
The months with the highest visibility are February, March and June (10km).
The months with the lowest visibility are January, April, May, July, August, September, October, November and December (9km).
