May weather forecast
Rio San Juan, Dominican Republic

Weather in May

The last month of the spring, May, is another hot month in Rio San Juan, Dominican Republic, with an average temperature fluctuating between 21°C (69.8°F) and 31°C (87.8°F).

Temperature

In May, the average high-temperature is relatively the same as in April - a still hot 31°C (87.8°F). In May, in Rio San Juan, the average low-temperature is 21°C (69.8°F).

Rainfall

In Rio San Juan, during May, the rain falls for 13 days and regularly aggregates up to 204mm (8.03") of precipitation. In Rio San Juan, during the entire year, the rain falls for 162 days and collects up to 1895mm (74.61") of precipitation.

Sea temperature

In Rio San Juan, the average seawater temperature in May is 26.9°C (80.4°F).
Note: 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.

Daylight

In Rio San Juan, the average length of the day in May is 13h and 4min.
On the first day of the month, sunrise is at 06:11 and sunset at 19:03. On the last day of May, in Rio San Juan, sunrise is at 06:00 and sunset at 19:15 AST.

Sunshine

In May, the average sunshine is 7h.

UV index

The months with the highest UV index are March through August, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an extreme threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 12 in May transform into the following instructions:
Practice all essential precautions. Protection against sun damage is crucial. 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. 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.
[Resources]

FAQ

How much does it rain in Rio San Juan in May?

In Rio San Juan, Dominican Republic, in May, during 13 rainfall days, 204mm (8.03") of precipitation is typically accumulated.

How warm is the water in May in Rio San Juan?

In Rio San Juan, Dominican Republic, in May, the average water temperature is 26.9°C (80.4°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

What is the average length of the day in May in Rio San Juan?

The average day length in May is 13h and 4min.

When are sunrise and sunset in May in Rio San Juan?

In May, on the first day of the month, sunrise is at 06:11 and sunset at 19:03. On the last day of the month, in Rio San Juan, Dominican Republic, sunrise is at 06:00 and sunset at 19:15 AST.

How long on average sun shines in May in Rio San Juan?

In Rio San Juan, Dominican Republic, the average sunshine duration in May is 7h.

When is the highest UV index in Rio San Juan?

The months with the highest UV index in Rio San Juan, Dominican Republic, are March through August, with an average maximum UV index of 12.

What is the UV index reading in May in Rio San Juan?

In Rio San Juan, the average daily maximum UV index in May is 12. A UV Index reading of 11, and higher, represents an extreme health threat from exposure to Sun's UV rays.
Average rainfall days
Average sunshine
Average UV index

Average temperature in May
Rio San Juan, Dominican Republic

Average temperature in May - Rio San Juan, Dominican Republic
  • Average high temperature in May: 31°C

The warmest months (with the highest average high temperature) are June, July, August and September (32°C).
The months with the lowest average high temperature are January, February and December (28°C).

  • Average low temperature in May: 21°C

The months with the highest average low temperature are June, July, August and September (22°C).
The coldest months (with the lowest average low temperature) are January, February and March (19°C).

[Resources]

Average rainfall in May
Rio San Juan, Dominican Republic

Average rainfall in May - Rio San Juan, Dominican Republic
  • Average rainfall in May: 204mm

The wettest month (with the highest rainfall) is November (268mm).
The driest month (with the least rainfall) is February (103mm).

[Resources]

Average rainfall days in May
Rio San Juan, Dominican Republic

Average rainfall days in May - Rio San Juan, Dominican Republic
  • Average rainfall days in May: 13 days

The months with the highest number of rainy days are August and October (16 days).
The month with the least rainy days is April (10 days).

[Resources]

Average sea temperature in May
Rio San Juan, Dominican Republic

Average sea temperature in May - Rio San Juan, Dominican Republic
  • Average sea temperature in May: 26.9°C

The best month for swimming (with the highest average sea temperature) is September (29.2°C).
The coldest month (with the lowest average sea temperature) is February (25.7°C).

[Resources]

Average daylight in May /
Average sunshine in May
Rio San Juan, Dominican Republic

Average daylight in May / Average sunshine in May - Rio San Juan, Dominican Republic
  • Average daylight in May: 13h and 4min

The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 10h and 58min).

  • Average sunshine in May: 7h

The months with the most sunshine are June, July and August (Average sunshine: 8h).
The months with the least sunshine are November and December (Average sunshine: 6h).

[Resources]

Average UV index in May
Rio San Juan, Dominican Republic

Average UV index in May - Rio San Juan, Dominican Republic
  • Average UV index in May: 12

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

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location