Climate averages 1991–2020
San Juan de la Maguana weather
by month.
See how the year changes. July (tied with August) has the highest average daily maximum; January has the lowest average monthly rainfall.
Pleasant-weather months by our simple rule: JanuaryFebruaryDecember
Long-term climate patterns, not a forecast for a particular trip.
Across the year San Juan de la Maguana averages a daytime high of 28.8°C and a nighttime low of 20.1°C, with about 865 mm of rain on roughly 164 days. July (tied with August) is the warmest month (average high 30.2°C) and December the coolest (28.0°C). May is the wettest month with 122 mm; January is the driest with 14 mm.
Months with pleasant weather by a simple rule (average high between 18°C and 29°C, average low of at least 5°C and at most 8 rain days): January, February and December. This looks at temperature and rain only, not humidity, wind, sea temperature or crowds.
The annual picture
A year in San Juan de la Maguana
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
San Juan de la Maguana climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.1°C18.0°C | 18.0°C | 14 | 3.8 | 11.111 h |
| February | 28.4°C18.6°C | 18.6°C | 26 | 6.3 | 11.512 h |
| March | 28.4°C19.5°C | 19.5°C | 71 | 12.5 | 12.012 h |
| April | 28.6°C20.5°C | 20.5°C | 101 | 16.7 | 12.613 h |
| May | 28.4°C21.1°C | 21.1°C | 122 | 19.6 | 13.013 h |
| June | 29.2°C21.3°C | 21.3°C | 74 | 16.7 | 13.213 h |
| July | 30.2°C21.3°C | 21.3°C | 62 | 15.9 | 13.113 h |
| August | 30.2°C21.5°C | 21.5°C | 103 | 18.4 | 12.813 h |
| September | 29.5°C21.2°C | 21.2°C | 111 | 20.2 | 12.312 h |
| October | 28.8°C20.8°C | 20.8°C | 104 | 18.2 | 11.712 h |
| November | 28.2°C19.7°C | 19.7°C | 59 | 11.3 | 11.311 h |
| December | 28.0°C18.3°C | 18.3°C | 18 | 4.3 | 11.011 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
Nearby cities
- Santa Cruz de BarahonaDominican Republic · 68 kmHigh 29.1°C · Low 22.9°C · 591 mm rain a year
- La VegaDominican Republic · 86 kmHigh 29.5°C · Low 20.7°C · 714 mm rain a year
- BonaoDominican Republic · 87 kmHigh 28.6°C · Low 20.9°C · 1,515 mm rain a year
- Santiago de los CaballerosDominican Republic · 91 kmHigh 30.3°C · Low 21.1°C · 687 mm rain a year
- Croix-des-BouquetsHaiti · 108 kmHigh 31.4°C · Low 23.6°C · 1,613 mm rain a year
- San Francisco de MacorísDominican Republic · 116 kmHigh 29.8°C · Low 20.7°C · 704 mm rain a year
- PétionvilleHaiti · 116 kmHigh 29.0°C · Low 21.4°C · 1,613 mm rain a year
- Cité SoleilHaiti · 120 kmHigh 31.6°C · Low 23.6°C · 1,613 mm rain a year
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC-4, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at 18.80°, -71.20° (3 km from the city centre), adjusted up by 0.3°C for the difference between the city's elevation (406 m) and the cell's (449 m). Rain comes from the 0.25° cell at 18.75°, -71.25°. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.