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January Weather in San Ramon, Mexico

Last updated: August 27, 2025

In January, the average temperature in San Ramon, Mexico hovers around 12°C (55°F), with temperatures ranging from a chilly -1°C (31°F) to a warm 25°C (78°F). Expect a modest 8 mm (0.3 in) of precipitation over approximately 2 days, contributing to an average humidity level of 70%. Whether you're exploring the local sights or enjoying the scenic beauty, be prepared for a delightful and varied climate!

January Temperature in San Ramon

In January in San Ramon, the average temperature is 12°C (55°F). The maximum can reach 25°C (78°F), while the minimum can be as low as -1°C (31°F). Be sure to pack layers and check the weather forecast before your trip to ensure you are prepared for the varying temperatures.

January Weather in San Ramon: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in San Ramon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Ramon, January typically has an average temperature of 12°C (55°F), with highs reaching up to 25°C (78°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec545862656665626362615755
Data source: Temperature data for San Ramon generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in San Ramon

In San Ramon in January, the precipitation amount is 8 mm (0.3 in) over the course of 2 days.

January Precipitation Trends in San Ramon

The chart displays monthly precipitation patterns in San Ramon, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In San Ramon, January typically receives around 8 mm (0.3 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec8817185818521320421469264
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in San Ramon

In San Ramon in January, humidity is 70%. With an average temperature of 12°C (55°F), this humidity feels like a thick blanket enveloping you, making outdoor exploration feel heavier and often requiring more breaks to stay comfortable while traveling.

January Average Humidity in San Ramon

This chart illustrates the average monthly humidity levels in San Ramon, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in San Ramon is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%64%54%61%75%83%83%85%85%79%76%75%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in San Ramon

In San Ramon in January, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in San Ramon.

Maximum UV Index Levels in San Ramon for January

The chart shows the monthly maximum UV Index (UVI) for San Ramon in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in San Ramon typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121415151414131412108
Data source: San Ramon January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How January Weather in San Ramon Compares to Other Months

Weather in San Ramon varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in San Ramon, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in San Ramon, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (55°F)8 mm (0.3 inches)70%very high
February Weather14°C (58°F)8 mm (0.3 inches)64%extreme
March Weather17°C (62°F)16 mm (0.6 inches)54%extreme
April Weather18°C (65°F)17 mm (0.7 inches)61%extreme
May Weather19°C (67°F)58 mm (2.3 inches)75%extreme
June Weather18°C (65°F)185 mm (7.3 inches)83%extreme
July Weather17°C (62°F)213 mm (8.4 inches)83%extreme
August Weather17°C (63°F)204 mm (8.0 inches)85%extreme
September Weather17°C (62°F)214 mm (8.4 inches)85%extreme
October Weather16°C (61°F)69 mm (2.7 inches)79%extreme
November Weather14°C (57°F)26 mm (1.0 inches)76%very high
December Weather13°C (55°F)4 mm (0.2 inches)74%very high

Compare San Ramon's Climate with Cities Worldwide