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Costa RicaThe weather in December in San Carlos
It's warm in December in San Carlos with an average temperature of 28°C. Temperatures this month range from a low of 27°C to a high of 29°C. At night, you can expect temperatures between 21°C and 22°C.
Looking for sun? December isn’t a good month to be in San Carlos. The temperature is nice, but there’s too much chance of rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in December for San Carlos, Costa Rica. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 31°C in 2015, San Carlos reached the highest temperature in December over the past 10 years. The lowest daytime temperature in this month was 22°C in 2023. The extreme nighttime temperatures ranged from a lowest recorded value of 17°C to a highest value of 28°C.
Rainfall amount
In December, there is an average of 178 mm of precipitation, spread over 20 days. The wind speed is around 2 Bft, mostly coming from the Southwest.
Daily weather in December for San Carlos
Click on any day in December to get detailed info about the usual weather on that day in San Carlos. Check out the historical temperatures and precipitation over the past 10 years on this day.
December weather comparison
| San Carlos | New York | |
|---|---|---|
| Average temperature | 28°C | 9°C |
| Max. temperature | 29°C | 12°C |
| Min. temperature | 21°C | -5°C |
| Total precipitation | 178 mm | 133 mm |
| Rainy days | 20 days | 17 days |
Start of December
The month of December starts in San Carlos with hot temps, averaging around 28°C during the day and nights around 22°C.
Mid December
By mid-December, daytime temps stay steady at around 28°C, with nights around 22°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
End of December
By the end of December, the average daytime temperature in San Carlos is around 29°C, while nighttime temps are about 22°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
The hurricane season in San Carlos runs from June to November.
Check out the climate of San Carlos for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in December in San Carlos, Costa Rica. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in December in San Carlos
Temperature in December in San Carlos over the years
Precipitation charts
These charts show the average amount of precipitation in December in San Carlos, Costa Rica. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in December in San Carlos
Total precipitation in December in San Carlos over the years
Daily UV index in December in San Carlos
This chart shows the average daily UV index in December in San Carlos, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in December in San Carlos
Have you been to San Carlos in December?
Share your weather experience in December in San Carlos.
Average weather in San Carlos by month
Click on a month below to see detailed weather info for San Carlos. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.