May weather forecast and climate
Santo Domingo, Dominican Republic

The Palace building in Santo Domingo, housing the National offices of the President and Vice President of the Dominican Republic
The Palace building in Santo Domingo, housing the National offices of the President and Vice President of the Dominican Republic
May, the last month of the spring, in Santo Domingo, is another tropical month, with average temperature ranging between max 30.4°C (86.7°F) and min 22.2°C (72°F).

Temperature

In May, the average high-temperature is practically the same as in April - a still tropical 30.4°C (86.7°F). In Santo Domingo, the average low-temperature is 22.2°C (72°F).

Heat index

The average heat index is estimated at a torrid 39.7°C (103.5°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'feels like', or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (differences in body mass, height, and shape, pregnancy, wind), and activity. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In May, the average relative humidity is 82.5%.

Rainfall

The month with the most rainfall in Santo Domingo is May when the rain falls for 11.3 days and typically aggregates up to 187.7mm (7.39") of precipitation.

Sea temperature

In Santo Domingo, in May, the average water temperature is 27.4°C (81.3°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

In May, the average length of the day in Santo Domingo is 13h.

Sunshine

The average sunshine in May is 6h.

UV index

Months with the highest UV index are March through September, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an excessive health risk from unsafe exposure to the UV radiation for the ordinary person.
Note: The average daily UV index of 12 in May transform into the following instructions:
Take all required precautions, as unprotected skin and eyes can burn in minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in May in Santo Domingo?

In May, in Santo Domingo, Dominican Republic, the average high-temperature is 30.4°C (86.7°F), and the average low-temperature is 22.2°C (72°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), that combines air temperature and relative humidity, in May is evaluated at 39.7°C (103.5°F).

What is the average humidity in May in Santo Domingo?

In May, the average relative humidity in Santo Domingo is 82.5%.

How many days does it rain in May in Santo Domingo?

In May, in Santo Domingo, the rain falls for 11.3 days. Throughout May, 187.7mm (7.39") of precipitation is accumulated.

What is the rainiest month in Santo Domingo?

The month with the most rainfall in Santo Domingo is May when the rain falls for 11.3 days and typically aggregates up to 187.7mm (7.39") of precipitation.

What is the sea water temperature in May in Santo Domingo?

In Santo Domingo, Dominican Republic, in May, the average water temperature is 27.4°C (81.3°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the average length of the day in May in Santo Domingo?

The average length of the day in May in Santo Domingo, Dominican Republic, is 13h.

How long on average sun shines in May in Santo Domingo?

In May, the average sunshine is 6h.

What is the month with the highest UV index in Santo Domingo?

March through September, with an average maximum UV index of 12, are months with the highest UV index in Santo Domingo, Dominican Republic.

What is the UV index reading in May in Santo Domingo?

In Santo Domingo, Dominican Republic, the average daily maximum UV index in May is 12. A UV Index value of 11, and more, symbolizes an extreme health threat from the exposure to the Sun's UV radiation.
Average temperature in May - Santo Domingo, Dominican Republic
  • Average high temperature in May: 30.4°C

The warmest month (with the highest average high temperature) is August (31.5°C).
Months with the lowest average high temperature are January and February (29.2°C).

  • Average low temperature in May: 22.2°C

The month with the highest average low temperature is June (22.9°C).
The coldest month (with the lowest average low temperature) is January (19.6°C).

Average humidity in May - Santo Domingo, Dominican Republic
  • Average humidity in May: 82.5%

The month with the highest relative humidity is October (85.7%).
The month with the lowest relative humidity is April (78.8%).

Average rainfall in May - Santo Domingo, Dominican Republic
  • Average rainfall in May: 187.7mm

The wettest month (with the highest rainfall) is May (187.7mm).
The driest month (with the least rainfall) is March (53.8mm).

Average rainfall days in May - Santo Domingo, Dominican Republic
  • Average rainfall days in May: 11.3 days

The month with the highest number of rainy days is October (13 days).
Months with the least rainy days are February and March (6.3 days).

Average sea temperature in May - Santo Domingo, Dominican Republic
  • Average sea temperature in May: 27.4°C

The best month for swimming (with the highest average sea temperature) is September (29.3°C).
The coldest months (with the lowest average sea temperature) are February and March (26.3°C).

Average daylight in May / Average sunshine in May - Santo Domingo, Dominican Republic
  • Average daylight in May: 13h

The month with the longest days is June (Average daylight: 13.2h).
The month with the shortest days is December (Average daylight: 11h).

  • Average sunshine in May: 6h

The month with the most sunshine is March (Average sunshine: 7.4h).
Months with the least sunshine are January and December (Average sunshine: 5.7).

Average UV index in May - Santo Domingo, Dominican Republic
  • Average UV index in May: 12

Months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 7).