San Juan
December
Weather in San Juan for December 2024
Your guide to San Juan weather in December - trends and predictions
In general, the average temperature in San Juan at the beginning of December is 29.7 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 27.6 °C by the end of December.
Expect significant rainfall in San Juan during December, with an average of 17 rainy days.
Is December a good time to visit San Juan? check out the best time to travel to San Juan page.
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14
Dry days
17
Rainy days
0
Snow days
28°/22°
Temperatures
23 km/h
Avg max wind
78 %
Avg humidity
San Juan in December average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  28° | ||||||
| 2  30° | 3 29° | 4 32° | 5 30° | 6  31° | 7  28° | 8 28° |
| 9 28° | 10 27° | 11 28° | 12  27° | 13 27° | 14 27° | 15 26° |
| 16 26° | 17 27° | 18 28° | 19 27° | 20 27° | 21 27° | 22 28° |
| 23 28° | 24 28° | 25  27° | 26 28° | 27 29° | 28 28° | 29 27° |
| 30 27° | 31 27° |
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Temperatures trend during December in San Juan
See the weather trend as well as the moving average line
December weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. | Cloudy | 28° /25° | 0 mm | 6 | |
| 2 Dec. | Light rain shower | 30° /24° | 1.6 mm | 7 | |
| 3 Dec. | Light rain shower | 29° /24° | 2.1 mm | 6 | |
| 4 Dec. | Cloudy | 32° /24° | 0 mm | 7 | |
| 5 Dec. | Light rain shower | 30° /23° | 0.7 mm | 7 | |
| 6 Dec. | Partly cloudy | 31° /22° | 0 mm | 8 | |
| 7 Dec. | Fog | 28° /22° | 2.9 mm | 6 | |
| 8 Dec. | Light rain shower | 28° /23° | 1 mm | 6 | |
| 9 Dec. | Patchy rain possible | 28° /24° | 0.2 mm | 6 | |
| 10 Dec. | Light rain shower | 27° /23° | 8.4 mm | 6 | |
| 11 Dec. | Light rain shower | 28° /23° | 4 mm | 6 | |
| 12 Dec. | Patchy light drizzle | 27° /23° | 1.8 mm | 6 | |
| 13 Dec. | Light rain shower | 27° /23° | 2.6 mm | 6 | |
| 14 Dec. | Light rain shower | 27° /23° | 7.6 mm | 6 | |
| 15 Dec. | Light rain shower | 26° /23° | 13.1 mm | 6 | |
| 16 Dec. | Light rain shower | 26° /23° | 8 mm | 6 | |
| 17 Dec. | Light rain shower | 27° /23° | 5.6 mm | 6 | |
| 18 Dec. | Patchy rain possible | 28° /23° | 0.7 mm | 6 | |
| 19 Dec. | Partly cloudy | 27° /22° | 0.1 mm | 7 | |
| 20 Dec. | Patchy rain possible | 27° /21° | 0.2 mm | 6 | |
| 21 Dec. | Patchy rain possible | 27° /22° | 0.6 mm | 6 | |
| 22 Dec. | Cloudy | 28° /22° | 3.8 mm | 7 | |
| 23 Dec. | Cloudy | 28° /22° | 2 mm | 7 | |
| 24 Dec. | Patchy rain possible | 28° /21° | 0.5 mm | 6 | |
| 25 Dec. | Overcast | 27° /22° | 0.5 mm | 6 | |
| 26 Dec. | Patchy rain possible | 28° /21° | 1.1 mm | 6 | |
| 27 Dec. | Patchy rain possible | 29° /21° | 0.5 mm | 7 | |
| 28 Dec. | Patchy rain possible | 28° /21° | 0.4 mm | 7 | |
| 29 Dec. | Patchy rain possible | 27° /20° | 0.7 mm | 6 | |
| 30 Dec. | Patchy rain possible | 27° /21° | 1.2 mm | 6 | |
| 31 Dec. | Overcast | 27° /21° | 0.7 mm | 6 | |
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Important Notice
Our weather forecast for San Juan in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the San Juan forecast closer to your planned date for the most up-to-date weather information.
San Juan in December - FAQ
What are the expected maximum and minimum temperatures in San Juan during December?
During December, expect a variety of temperatures with highs around 28° and lows near 22°, suitable for diverse activities and preferences.
How much rainfall should be expected in San Juan during December?
Moderate rainfall is anticipated in San Juan during December, with a total of 83.9 mm spread over approximately 17 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in San Juan during December?
The average wind speed in San Juan during December is 23 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to San Juan in December?
As you prepare for your trip to San Juan in December, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in San Juan, during December, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
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