Last updated: June 24, 2025
In May, the average temperature in Alamo Heights, United States hovers around 25°C (77°F), creating a comfortable climate for exploration. Expect temperature fluctuations, with minimums dipping to 11°C (51°F) and maximums rising to a sizzling 37°C (99°F). While you enjoy the warmth, be prepared for precipitation, averaging 130 mm (5.1 in) over 15 days, paired with a high average humidity of 81%.
In May in Alamo Heights, the average temperature is 25°C (77°F), with maximums reaching 37°C (99°F) and minimums dipping as low as 11°C (51°F). This range makes Alamo Heights an ideal destination for travelers looking to enjoy warm weather while still having the option to experience cooler evenings.
In Alamo Heights in May, the total precipitation amount is 130 mm (5.1 in) over the course of 15 days.
In Alamo Heights in May, humidity is 81%. With an average temperature of 25°C (77°F), this humidity feels like walking through a warm, thick blanket, making traveling quite challenging as you may feel sticky and sluggish, requiring frequent breaks to stay refreshed and hydrated.
In Alamo Heights in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Alamo Heights.
UV Risk Categories
Weather in Alamo Heights varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Alamo Heights, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 11°C (53°F) | 44 mm (1.7 inches) | 79% | moderate |
| February Weather | 13°C (55°F) | 58 mm (2.3 inches) | 79% | very high |
| March Weather | 18°C (65°F) | 62 mm (2.5 inches) | 74% | very high |
| April Weather | 21°C (70°F) | 71 mm (2.8 inches) | 76% | extreme |
| May Weather | 25°C (77°F) | 130 mm (5.1 inches) | 81% | extreme |
| June Weather | 28°C (83°F) | 78 mm (3.1 inches) | 76% | extreme |
| July Weather | 29°C (85°F) | 69 mm (2.7 inches) | 66% | extreme |
| August Weather | 30°C (86°F) | 56 mm (2.2 inches) | 58% | extreme |
| September Weather | 27°C (80°F) | 117 mm (4.6 inches) | 65% | extreme |
| October Weather | 22°C (72°F) | 89 mm (3.5 inches) | 74% | very high |
| November Weather | 16°C (61°F) | 46 mm (1.8 inches) | 81% | high |
| December Weather | 13°C (56°F) | 57 mm (2.3 inches) | 86% | moderate |