Santo Domingo, Dominican Republic Climate & Monthly Averages
Santo Domingo has a subtropical highland climate. August is the hottest month, averaging 74° by day; January is the coldest at 67°.
Temperature stays steady in Santo Domingo; moisture changes
Santo Domingo has one of the steadier climates in our dataset. Average highs move only 4°C across the whole year - from 67°F (20°C) in January to 74°F (23°C) in August - so the practical difference between seasons here is rainfall and daylight, not warmth.
What changes when temperature does not
At its warmest, in August, Santo Domingo runs to 74°F (23°C) in the afternoon and back to 59°F (15°C) by dawn. January bottoms out at 67°F (20°C) in daylight, 53°F (11°C) after dark. Between the average August and the average January lie 4°C, a narrower spread than about 89% of the cities we track.
May is the wettest month at 5.7 inches (145 mm) over 19 days; December is the driest. Relative humidity averages 83% across the year, more humid than 94% of the 3496 cities in our dataset. June is the brightest month at 11.8 hours of sun a day, against an annual average of 10.6 - sunnier than roughly 85% of the cities we track.
The gridded 2015-2024 daily record for this location tops out at 83°F (28°C) and bottoms at 43°F (6°C) - decade extremes, not all-time station records.
More climate facts for Santo Domingo
- Hottest month: August - highs near 74°F (23°C)
- Coldest month: January - highs near 67°F (20°C)
- Decade extremes (2015-2024): 83°F (28°C) high · 43°F (6°C) low
- Wettest month: May (19 rainy days) · Sunniest: June (11.8 h sun/day)
- Climate type: subtropical highland
- Annual swing: 4°C between the average warmest and coolest month · day to night: 8°C
- Average humidity: 83%
Pick dates by rain and sunshine in Santo Domingo
Choose dates by rain, not just temperature
December to March is the sweet spot for Santo Domingo - warm days, manageable rainfall and plenty of daylight line up. Expect 67°F (20°C) in the afternoon and around 14 days of rain in a typical month of it. For the same question asked the other way round, see where else is warm in December.
What to pack
Pack for Santo Domingo with proper waterproofs rather than an umbrella - wet days are the norm here. Even in August, lows of 59°F (15°C) make an extra layer worth the space.
Where Santo Domingo sits among other climates
- Rain or snow reaches the ground on 208 days a year - more wet days than 92% of the 3496 cities we track.
These comparisons use the same ten-year window for every city in the dataset.
Small temperature shifts, month by month
Each card shows the average high and low. The bar places that month between Santo Domingo's coldest night and warmest afternoon.
January
- Rain
- 13 days
- Sunshine
- 9.9 h
- Daylight
- 11.1 h
February
- Rain
- 15 days
- Sunshine
- 10.3 h
- Daylight
- 11.5 h
March
- Rain
- 15 days
- Sunshine
- 10.6 h
- Daylight
- 12.0 h
April
- Rain
- 20 days
- Sunshine
- 10.7 h
- Daylight
- 12.6 h
May
- Rain
- 19 days
- Sunshine
- 11.0 h
- Daylight
- 13.0 h
June
- Rain
- 16 days
- Sunshine
- 11.8 h
- Daylight
- 13.3 h
July
- Rain
- 17 days
- Sunshine
- 11.7 h
- Daylight
- 13.2 h
August
- Rain
- 18 days
- Sunshine
- 11.3 h
- Daylight
- 12.8 h
September
- Rain
- 22 days
- Sunshine
- 10.4 h
- Daylight
- 12.2 h
October
- Rain
- 20 days
- Sunshine
- 9.8 h
- Daylight
- 11.7 h
November
- Rain
- 17 days
- Sunshine
- 9.8 h
- Daylight
- 11.2 h
December
- Rain
- 15 days
- Sunshine
- 10.1 h
- Daylight
- 11.0 h
Looking for warmer alternatives? Browse warm places by month, or compare Santo Domingo's coolest part of the year: February, January, December.
Monthly temperature and rain table
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 67° | 53° | 13 | 3.3 in | 9.9 h/day | 11.1 h | 41% | 84% |
| February | 67° | 53° | 15 | 3.1 in | 10.3 h/day | 11.5 h | 54% | 86% |
| March | 68° | 53° | 15 | 5.0 in | 10.6 h/day | 12.0 h | 48% | 83% |
| April | 70° | 56° | 20 | 5.6 in | 10.7 h/day | 12.6 h | 66% | 84% |
| May | 72° | 57° | 19 | 5.7 in | 11.0 h/day | 13.0 h | 61% | 81% |
| June | 74° | 58° | 16 | 3.4 in | 11.8 h/day | 13.3 h | 55% | 79% |
| July | 74° | 59° | 17 | 3.2 in | 11.7 h/day | 13.2 h | 56% | 81% |
| August | 74° | 59° | 18 | 4.8 in | 11.3 h/day | 12.8 h | 59% | 81% |
| September | 74° | 59° | 22 | 4.7 in | 10.4 h/day | 12.2 h | 73% | 83% |
| October | 72° | 58° | 20 | 4.0 in | 9.8 h/day | 11.7 h | 65% | 84% |
| November | 70° | 56° | 17 | 4.2 in | 9.8 h/day | 11.2 h | 57% | 87% |
| December | 68° | 54° | 15 | 2.9 in | 10.1 h/day | 11.0 h | 48% | 87% |
Questions about Santo Domingo's even temperatures
How many rainy days does Santo Domingo get in a year?
How warm is Santo Domingo on average?
Is Santo Domingo hot in summer?
How cold does Santo Domingo get in winter?
The subtle seasons of Santo Domingo
Spring (March through May)
Spring is pleasantly warm here - highs near 70°F (21°C), nights near 55°F (13°C), and rain falls on around 54 of the 90 days. Daylight is generous - around 10.8 hours of sun a day.
Summer (June through August)
Summer in Santo Domingo brings comfortable warmth, with daytime highs averaging 74°F (23°C) and nights around 59°F (15°C); rain falls on around 52 of the 90 days. Daylight is generous - around 11.6 hours of sun a day.
Fall (September through November)
Fall in Santo Domingo brings comfortable warmth, with daytime highs averaging 72°F (22°C) and nights around 58°F (14°C); rain falls on around 59 of the 90 days. Daylight is generous - around 10.0 hours of sun a day.
Winter (December through February)
Through winter, Santo Domingo stays on the cool side of mild: 67°F (20°C) by day, 53°F (12°C) after dark, and rain falls on around 43 of the 90 days. Daylight is generous - around 10.1 hours of sun a day.
Santo Domingo temperature extremes in the 2015–2024 dataset
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need another precipitation unit? Use the rainfall converter.