December weather forecast
Puerto Rico, USA

December in Puerto Rico signifies the onset of the dry season, marking a welcomed respite from the extended wet phase the island underwent. During this month, the temperature spectrum begins at lows near 74°F (23.3°C) and can escalate to highs around 85°F (29.4°C). The warmth of preceding months starts to wane, ushering in a period of more comfortable and cooler climes.

Distinct temperature variances persist. In the northern regions, locales like San Juan, Toa Alta, and Manatí are marginally cooler compared to the warmer ambience of the south. The Cordillera Central Mountain Range continues to influence the weather. In elevated towns such as Cidra and Cayey, the drop in temperature is more noticeable, signifying the chillier embrace of December.

Rainfall in December diminishes significantly. Although occasional showers might occur, their frequency and intensity are reduced, marking a shift from the heavy downpours of November. Coastal towns, from Mayagüez to Maunabo, enjoy clearer skies and lesser rainfall, bringing about a delightful balance of sun and temperate weather.

While the hurricane season officially concludes in November, December ushers in a period of cautionary relief. The possibility of any major tropical disturbances affecting Puerto Rico becomes minimal. With festive celebrations on the horizon, the island embraces this dry season, ensuring a blend of sunny days and cooler nights for both residents and visitors.

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• San Juan - December »
  With an average of 11h and 0min of daylight, December has the shortest days of the year in San Juan, Puerto Rico. In San Juan, during December, the rain falls for 14.5 days and regularly aggregates up to 0.98" (25mm) of precipitation.
• Fajardo - December »
  With an average of 11h and 6min of daylight, December has the shortest days of the year in Fajardo, Puerto Rico. The month with the least sunshine in Fajardo is December, with an average of 6.4h of sunshine.
• Toa Baja - December »
  In Toa Baja in December, it is raining for 17.5 days, with typically 1.61" (41mm) of accumulated precipitation. The month with the shortest days in Toa Baja is December, with an average of 11h and 0min of daylight.
• Aguadilla - December »
  In Aguadilla during December, the rain falls for 16.7 days and regularly aggregates up to 1.54" (39mm) of precipitation. In Aguadilla, Puerto Rico, during December, the rain falls for 16.7 days and regularly aggregates up to 1.54" (39mm) of precipitation.
• Vega Baja - December »
  In Vega Baja, Puerto Rico, during December, the rain falls for 14.4 days and regularly aggregates up to 1.38" (35mm) of precipitation. The month with the shortest days in Vega Baja is December, with an average of 11h and 0min of daylight.
• Juana Díaz - December »
  In Juana Díaz in December, the average water temperature is 82°F (27.8°C). Juana Díaz commences December with an average high-temperature of a still warm 82°F (27.8°C), maintaining a close resemblance to the previous month.
• Adjuntas - December »
  January through March, November and December, with an average maximum UV index of 6, are months with the lowest UV index in Adjuntas, Puerto Rico. With an average of 11h and 6min of daylight, December has the shortest days of the year in Adjuntas, Puerto Rico.
• Cabo Rojo - December »
  In Cabo Rojo, Puerto Rico, in December, it is raining for 15.6 days, with typically 1.26" (32mm) of accumulated precipitation. January, February and December, with an average maximum UV index of 6, are months with the lowest UV index in Cabo Rojo, Puerto Rico.
• Guánica - December »
  With an average of 11h and 6min of daylight, December has the shortest days of the year in Guánica, Puerto Rico. The months with the lowest UV index in Guánica are January through March, November and December, with an average maximum UV index of 6.
• Vega Alta - December »
  In Vega Alta in December, it is raining for 17.5 days, with typically 1.61" (41mm) of accumulated precipitation. The month with the shortest days in Vega Alta is December, with an average of 11h and 0min of daylight.
• Luquillo - December »
  With an average of 6.4h of sunshine, December has the least sunshine of the year in Luquillo, Puerto Rico. In Luquillo in December, during 18.1 rainfall days, 1.57" (40mm) of precipitation is typically accumulated.
• Rincon - December »
  January through December, with an average maximum UV index of 7, are months with the highest UV index in Rincon, Puerto Rico. On the first day of December in Rincon, Puerto Rico, sunrise is at 6:44 am and sunset at 5:51 pm.