Last updated: June 24, 2025
In San Leon, United States, the average temperature in January hovers around 13°C (55°F). During this time, you can expect minimums of -7°C (21°F) and maximums of 27°C (81°F). With an average humidity of 78%, conditions can feel quite moist. Be prepared for some rain, as total precipitation reaches about 78 mm (3.1 in) over a span of 8 days.
In January in San Leon, the average temperature is 13°C (55°F), with maximums reaching 27°C (81°F) and minimums dipping as low as -7°C (21°F). Travelers should be prepared for a wide range of temperatures during their visit.
In San Leon in January, the total precipitation amount is 78 mm (3.1 in) over the course of 8 days.
In San Leon in January, humidity is 78%. With an average temperature of 13°C (55°F), this humidity feels like a damp blanket enveloping you, making outdoor activities feel steamy and your clothes cling uncomfortably, often leaving you longing for a cool breeze or an air-conditioned escape while exploring.
In San Leon in January, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in San Leon.
UV Risk Categories
Weather in San Leon varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in San Leon, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 13°C (55°F) | 78 mm (3.1 inches) | 78% | moderate |
| February Weather | 15°C (59°F) | 86 mm (3.4 inches) | 81% | very high |
| March Weather | 19°C (66°F) | 68 mm (2.7 inches) | 76% | very high |
| April Weather | 21°C (70°F) | 98 mm (3.9 inches) | 79% | extreme |
| May Weather | 25°C (77°F) | 168 mm (6.6 inches) | 79% | extreme |
| June Weather | 28°C (82°F) | 166 mm (6.5 inches) | 74% | extreme |
| July Weather | 28°C (83°F) | 150 mm (5.9 inches) | 71% | extreme |
| August Weather | 29°C (84°F) | 208 mm (8.2 inches) | 68% | extreme |
| September Weather | 27°C (81°F) | 216 mm (8.5 inches) | 73% | very high |
| October Weather | 23°C (73°F) | 121 mm (4.7 inches) | 75% | very high |
| November Weather | 17°C (63°F) | 78 mm (3.1 inches) | 78% | high |
| December Weather | 15°C (59°F) | 104 mm (4.1 inches) | 84% | moderate |