Santo Domingo
Dominican Republic
Long-term weather forecast
Long-term weather forecast

January 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
January, like December, in Santo Domingo, Dominican Republic, is a moderately hot winter month, with average temperature fluctuating between 19.6°C (67.3°F) and 29.2°C (84.6°F).

Temperature

The coldest months are January and February, with an average high-temperature of 29.2°C (84.6°F).

Heat index

The average heat index in January is evaluated at a torrid 35.9°C (96.6°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
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 'apparent temperature', 'felt air temperature', 'feels like', or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (metabolic differences, clothing, differences in body mass, height, and shape). 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 particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. 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 Santo Domingo, the average relative humidity in January is 82.5%.

Rainfall

In Santo Domingo, in January, during 7.6 rainfall days, 63mm (2.5") of precipitation is typically accumulated. In Santo Domingo, during the entire year, the rain falls for 115.4 days and collects up to 1447.1mm (57") of precipitation.

Sea temperature

In Santo Domingo, Dominican Republic, the average seawater temperature in January is 26.7°C (80.1°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 January, the average length of the day in Santo Domingo is 11.2h.

Sunshine

Months with the least sunshine in Santo Domingo, Dominican Republic, are January and December, with an average of 5.7h of sunshine.

UV index

In January, the average daily maximum UV index is 8. A UV Index estimate of 8 to 10 represents a very high health risk from the exposure to the Sun's UV radiation for the average person.
Note: In January, the average maximum UV index of 8 translate into the following recommendations:
Take extra precautions. Protection against sun damage is required. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What are the coldest months in Santo Domingo?

The coldest months in Santo Domingo are January and February, with an average high-temperature of 29.2°C (84.6°F).

What is the temperature in January in Santo Domingo?

In January, in Santo Domingo, the average high-temperature is 29.2°C (84.6°F), and the average low-temperature is 19.6°C (67.3°F). In January, the average heat index (a.k.a. 'real feel', 'felt air temperature'), that calculates temperature value influenced by the moisture in the air, is appraised at 35.9°C (96.6°F).

What is the average humidity in January in Santo Domingo?

The average relative humidity in January in Santo Domingo is 82.5%.

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

In Santo Domingo, in January, during 7.6 rainfall days, 63mm (2.5") of precipitation is typically accumulated.

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

In Santo Domingo, in January, the average water temperature is 26.7°C (80.1°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.

How many hours of daylight does Santo Domingo have in January?

In January, the average length of the day in Santo Domingo, Dominican Republic, is 11.2h.

What is the month with the least sunshine in Santo Domingo?

January and December, with an average of 5.7h of sunshine, are months with the least sunshine.

How many hours of sunshine does Santo Domingo have in January?

In January, the average sunshine is 5.7h.

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

The average daily maximum UV index in January in Santo Domingo is 8. A UV Index reading of 8 to 10 represents a very high health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in January - Santo Domingo, Dominican Republic
  • Average high temperature in January: 29.2°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 January: 19.6°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 January - Santo Domingo, Dominican Republic
  • Average humidity in January: 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 January - Santo Domingo, Dominican Republic
  • Average rainfall in January: 63mm

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

Average rainfall days in January - Santo Domingo, Dominican Republic
  • Average rainfall days in January: 7.6 days

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

Average sea temperature in January - Santo Domingo, Dominican Republic
  • Average sea temperature in January: 26.7°C

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

Average daylight in January / Average sunshine in January - Santo Domingo, Dominican Republic
  • Average daylight in January: 11.2h

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

  • Average sunshine in January: 5.7h

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

Average UV index in January - Santo Domingo, Dominican Republic
  • Average UV index in January: 8

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).