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February Weather in San Ysidro, United States

Last updated: June 24, 2025

In February, the average temperature in San Ysidro, United States hovers around 10°C (50°F). Visitors can expect a temperature range from a chilly -9°C (17°F) to a warm 27°C (81°F). With an average precipitation of 14 mm (0.6 in) over 3 days, it's wise to be prepared for some rain. Additionally, the average humidity levels sit at a comfortable 79%, making for a refreshing atmosphere.

February Temperature in San Ysidro

In February in San Ysidro, the average temperature is 10°C (50°F). The maximum can reach 27°C (81°F), while the minimum can drop as low as -9°C (17°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

February Weather in San Ysidro: Daily Temperature Highs, Lows, and Averages

The chart illustrates February temperature patterns in San Ysidro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Ysidro, February typically has an average temperature of 10°C (50°F), with highs reaching up to 27°C (81°F) and lows dropping to around -9°C (17°F).
JanFebMarAprMayJunJulAugSepOctNovDec455058677583838277665546
Data source: Temperature data for San Ysidro 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.

February Precipitation in San Ysidro

In San Ysidro in February, the precipitation amount is 14 mm (0.6 in) accumulated over the course of 3 days.

February Precipitation Trends in San Ysidro

The chart displays monthly precipitation patterns in San Ysidro, with values for each month alongside February’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how February’s conditions compare to those of other months. In San Ysidro, February typically receives around 14 mm (0.6 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec1315163422313324211313
Data source: Precipitation data for February generated using information from the Copernicus Climate Change Service.
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February Humidity in San Ysidro

In San Ysidro in February humidity is 79%. With an average temperature of 10°C (50°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration less inviting and requiring layered clothing to stay comfortable while traveling.

February Average Humidity in San Ysidro

This chart illustrates the average monthly humidity levels in San Ysidro, with February’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In February, average humidity in San Ysidro is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%79%65%55%54%53%55%58%70%75%83%82%
Data source: Humidity data for February generated using information from the Copernicus Climate Change Service.

February UV Index in San Ysidro

In San Ysidro in February, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in San Ysidro.

Maximum UV Index Levels in San Ysidro for February

The chart shows the monthly maximum UV Index (UVI) for San Ysidro in February, 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 February, the maximum UV index in San Ysidro typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec5710121213121211865
Data source: San Ysidro February 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 February Weather in San Ysidro Compares to Other Months

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

This table compares monthly weather conditions in San Ysidro, showing how February’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)13 mm (0.5 inches)79%moderate
February Weather10°C (50°F)14 mm (0.6 inches)79%high
March Weather14°C (58°F)16 mm (0.6 inches)65%very high
April Weather20°C (67°F)3 mm (0.1 inches)55%extreme
May Weather24°C (75°F)4 mm (0.2 inches)54%extreme
June Weather28°C (84°F)22 mm (0.9 inches)53%extreme
July Weather29°C (84°F)31 mm (1.2 inches)55%extreme
August Weather28°C (83°F)33 mm (1.3 inches)57%extreme
September Weather25°C (77°F)24 mm (0.9 inches)70%extreme
October Weather19°C (66°F)21 mm (0.8 inches)75%very high
November Weather13°C (56°F)13 mm (0.5 inches)83%high
December Weather8°C (47°F)12 mm (0.5 inches)82%moderate

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