May Weather in Houston

Last updated: March 2, 2024

The weather in Houston, United States, during May is characterized by an average temperature of 18°C (65°F). Highs can soar to 30°C (86°F), while lows may dip to 6°C (43°F). Typically, the humidity level in Houston throughout May hovers around 83%.

6°C (43°F)

Minimum temperature

18°C (65°F)

Average temperature

30°C (86°F)

Maximum temperature

83%

Humidity

Precipitation and Sunshine hours

In May, Houston averages 188 mm (7.4 inches) of rainfall, typically over the course of 15 rainy days. The month enjoys an average of 14 hours 11 minutes of daylight, with the sun shining for approximately 9 hours 8 minutes each day. Additionally, there is a 27% probability of sunny days during this period.

188 mm (7.4 inches)

Precipitation

15 rainy days

Rainy days

9 hours 8 minutes

Sunshine hours

27%

Chance of sun

UV Index

In May, the UV Index in Houston reaches a maximum of 11, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 10 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00
UVI 1 2 4 6 8 10 11 10 8 6 3 2 1
Exposure Low Moderate High VeryHigh Extreme VeryHigh High Moderate Low
Time to burn 45 min 30 min 25 min 15 min 10 min 15 min 25 min 30 min 45 min

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