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 »
  In San Juan during December, the rain falls for 14.5 days and regularly aggregates up to 0.98" (25mm) of precipitation. In San Juan in December, it is raining for 14.5 days, with typically 0.98" (25mm) of accumulated precipitation.
• Fajardo - December »
  The month with the shortest days in Fajardo is December, with an average of 11h and 6min of daylight. The month with the shortest days in Fajardo is December, with an average of 11h and 6min of daylight.
• Toa Baja - December »
  December has the shortest days of the year in Toa Baja, with an average of 11h and 0min of daylight. With an average of 11h and 0min of daylight, December has the shortest days of the year in Toa Baja.
• Aguadilla - December »
  In Aguadilla during December, the rain falls for 16.7 days and regularly aggregates up to 1.54" (39mm) of precipitation. The months with the lowest UV index in Aguadilla are January through December, with an average maximum UV index of 7.
• Vega Baja - December »
  In Vega Baja during December, the rain falls for 14.4 days and regularly aggregates up to 1.38" (35mm) of precipitation. December has the shortest days of the year in Vega Baja, with an average of 11h and 0min of daylight.
• Juana Díaz - December »
  As November transitions into December, the average high-temperature in Juana Díaz rests at a still warm 82°F (27.8°C), maintaining a close resemblance to the previous month. The month with the shortest days in Juana Díaz is December, with an average of 11h and 6min of daylight.
• Adjuntas - December »
  In Adjuntas snow does not fall in January through August, October through December. In Adjuntas in December, it is raining for 16.3 days, with typically 1.22" (31mm) of accumulated precipitation.
• Cabo Rojo - December »
  Cabo Rojo greets December with an average high-temperature of a still warm 82.8°F (28.2°C), marking a slight deviation from the preceding month. In Cabo Rojo, Puerto Rico, in December, it is raining for 15.6 days, with typically 1.26" (32mm) of accumulated precipitation.
• Guánica - December »
  The month with the shortest days in Guánica, Puerto Rico, is December, with an average of 11h and 6min of daylight. December has the shortest days of the year in Guánica with an average of 11h and 6min of daylight.
• Vega Alta - December »
  December has the shortest days of the year in Vega Alta with an average of 11h and 0min of daylight. In December, in Vega Alta, Puerto Rico, the rain falls for 17.5 days.
• Luquillo - December »
  With an average of 11h and 0min of daylight, December has the shortest days of the year in Luquillo, Puerto Rico. In Luquillo, Puerto Rico, in December, during 18.1 rainfall days, 1.57" (40mm) of precipitation is typically accumulated.
• Rincon - December »
  In Rincon, Puerto Rico, in December, the average water temperature is 81.9°F (27.7°C). The months with the highest UV index in Rincon, Puerto Rico, are January through December, with an average maximum UV index of 7.