May weather forecastSanto Tomás, Cuba

May

Weather in May

The last month of the spring, May, is another hot month in Santo Tomás, Cuba, with an average temperature varying between 30.4°C (86.7°F) and 23.8°C (74.8°F).

Temperature

During May, Santo Tomás records an average high-temperature of a still hot 30.4°C (86.7°F), marking a slight divergence from April's 30.3°C (86.5°F). During May, Santo Tomás consistently records a temperature low averaging a moderately hot 23.8°C (74.8°F).

Heat index

May's mean heat index is calculated to be a very hot 38°C (100.4°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
It is important to note that the heat index values are for shaded areas and light wind scenarios. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

In May, the average relative humidity in Santo Tomás is 76%.

Rainfall

In May, the rain falls for 19.8 days. Throughout May, 89mm (3.5") of precipitation is accumulated. In Santo Tomás, during the entire year, the rain falls for 181.5 days and collects up to 590mm (23.23") of precipitation.

Daylight

In Santo Tomás, the average length of the day in May is 13h and 11min.
On the first day of the month, sunrise is at 06:42 and sunset at 19:41. On the last day of May, sunrise is at 06:31 and sunset at 19:54 CDT.

Sunshine

In Santo Tomás, the average sunshine in May is 10.7h.

UV index

The months with the highest UV index are March through October, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: A maximum daily UV index of 7 during May morphs into the following directions:
Stay clear of intense sun exposure. Solar protection is of utmost significance. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.

Updated: Jul 17, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature during May is 30.4°C (86.7°F) and the low-temperature is 23.8°C (74.8°F). In May, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 38°C (100.4°F).

The average relative humidity in May is 76%.

In Santo Tomás, during May, the rain falls for 19.8 days and regularly aggregates up to 89mm (3.5") of precipitation.

In Santo Tomás, the average day length in May is 13h and 11min.

In May, on the first day of the month, sunrise is at 06:42 and sunset at 19:41. On the last day of the month, sunrise is at 06:31 and sunset at 19:54 CDT.

In May, the average sunshine duration is 10.7h.

The months with the highest UV index are March through October, with an average maximum UV index of 7.

In May, the average daily maximum UV index is 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

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

Apr

May

Jun

Average high temperature

30.3°C

30.4°C

31.1°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

13km/h

12.2km/h

10.8km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

12.8

8.6

7.1

Average UV index

Average cloud cover

Average visibility

Average temperature in May
Santo Tomás, Cuba

Average high temperature in May: 30.4°C

The warmest month (with the highest average high temperature) is August (32.1°C).
The month with the lowest average high temperature is January (27°C).

Average low temperature in May: 23.8°C

The month with the highest average low temperature is August (25.5°C).
The coldest month (with the lowest average low temperature) is January (20.3°C).

Average pressure in May
Santo Tomás, Cuba

Average pressure in May: 1014.6mbar

The month with the highest atmospheric pressure is January (1017.5mbar).
The month with the lowest atmospheric pressure is October (1012.5mbar).

Average wind speed in May
Santo Tomás, Cuba

Average wind speed in May: 11.2km/h

The windiest month (with the highest average wind speed) is November (13.9km/h).
The calmest month (with the lowest average wind speed) is June (9.8km/h).

Average humidity in May
Santo Tomás, Cuba

Average humidity in May: 76%

The month with the highest relative humidity is October (81%).
The month with the lowest relative humidity is March (71%).

Average rainfall in May
Santo Tomás, Cuba

Average rainfall in May: 89mm

The wettest month (with the highest rainfall) is October (91mm).
The driest months (with the least rainfall) are February and March (14mm).

Average rainfall days in May
Santo Tomás, Cuba

Average rainfall days in May: 19.8 days

The months with the highest number of rainy days are August and October (21.7 days).
The month with the least rainy days is February (6.6 days).

Average daylight in May /
Average sunshine in May
Santo Tomás, Cuba

Average daylight in May: 13h and 12min

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

Average sunshine in May: 10h and 42min

The month with the most sunshine is August (Average sunshine: 11h and 18min).
The month with the least sunshine is November (Average sunshine: 6h and 54min).

Average sunshine days in May
Santo Tomás, Cuba

Average sunshine days in May: 8.6 days

The month with the most sunshine days is December (20.3 days).
The month with the least sunshine days is August (6.4 days).

Average UV index in May
Santo Tomás, Cuba

Average UV index in May: 7

The months with the highest UV index are March, April, May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 6).

Average cloud cover in May
Santo Tomás, Cuba

Average cloud cover in May: 30

The month with the most cloud cover is October (Cloud cover 31).
The month with the least cloud cover is February (Cloud cover 24).

Average visibility in May
Santo Tomás, Cuba

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).