| < January >
|Normal Max/ High Temperature
|Min/ Low Temperature
|Average Daylight per day
|Sun altitude at solar noon on the 21st day.
- The average temperature in San Juan in January is really warm at 22.45 °C (72.41 °F).
- Afternoons can be very hot with average high temperatures reaching 29.6 °C (85.3 °F).
- Overnight temperatures are generally very mild with an average low of 15.3 °C (59.5 °F).
- The average diurnal temperature variation/ range in January is 14.3 °C (25.7 °F).
- The weather in January is droughty. A feeble 12.1mm (0.5in) of H2O is discharged.
- The shortest day is 11:00 long and the longest day is 11:16 long with an average length of 11:07.
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Weather Trend Graph for January in San Juan, Dominican Republic
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