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PeruThe weather in December in San Mateo
It's pleasantly warm in December in San Mateo with an average temperature of 22°C. Temperatures this month range from a low of 20°C to a high of 23°C. At night, you can expect temperatures between 14°C and 16°C.
Looking for sun? December isn’t a good month to be in San Mateo. 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 Mateo, Peru. 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 35°C in 2023, San Mateo reached the highest temperature in December over the past 10 years. The lowest daytime temperature in this month was 9°C in 2019. The extreme nighttime temperatures ranged from a lowest recorded value of -3°C to a highest value of 24°C.
Rainfall amount
In December, there is an average of 138 mm of precipitation, spread over 15 days. The wind speed is around 4 Bft, mostly coming from the Southwest.
Daily weather in December for San Mateo
Click on any day in December to get detailed info about the usual weather on that day in San Mateo. Check out the historical temperatures and precipitation over the past 10 years on this day.
December weather comparison
| San Mateo | New York | |
|---|---|---|
| Average temperature | 22°C | 9°C |
| Max. temperature | 23°C | 12°C |
| Min. temperature | 14°C | -5°C |
| Total precipitation | 138 mm | 133 mm |
| Rainy days | 15 days | 17 days |
Start of December
The month of December starts in San Mateo with mild temps, averaging around 21°C during the day and nights around 15°C.
Mid December
By mid-December, daytime temps rise to around 22°C, with nights around 16°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 Mateo is around 22°C, while nighttime temps are about 16°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 10 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of San Mateo for all months and discover the best travel time
Curious about the weather in other parts of Peru? Check out the climate and weather for spots like Lima, Cusco, Machu Picchu, or explore other destinations in Peru.
Temperature charts
These charts show the average temperatures in December in San Mateo, Peru. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in December in San Mateo
Temperature in December in San Mateo over the years
Precipitation charts
These charts show the average amount of precipitation in December in San Mateo, Peru. 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 Mateo
Total precipitation in December in San Mateo over the years
Daily UV index in December in San Mateo
This chart shows the average daily UV index in December in San Mateo, 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 Mateo
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Average weather in San Mateo by month
Click on a month below to see detailed weather info for San Mateo. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.