Santo Domingo
Dominican Republic
Long-term weather forecast
Long-term weather forecast
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September weather forecast and Climate
Santo Domingo, Dominican Republic

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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
  • The average high temperature in September: 31.4°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).

  • The average low temperature in September: 22.7°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).

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  • The average humidity in September: 85.1%

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

  • The average rainfall in September: 180.9mm

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

  • The average rainfall days in September: 11.8 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).

  • The average sea temperature in September: 29.3°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).

  • The average daylight in September: 12h

Months with the longest days are April, May, June, July and August (Average daylight: 13h).
Months with shortest days are January, November and December (Average daylight: 11h).

  • The average sunshine in September: 6.6h

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

  • The average UV index in September: 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).

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