Last updated: June 24, 2025
In May, the average temperature in Mountain View, United States is a pleasant 23°C (74°F). Expect a minimum of 18°C (65°F) and a maximum of 28°C (83°F), providing a comfortable range for outdoor activities. However, be prepared for a fair amount of rain, with precipitation reaching 127 mm (5.0 in) over 24 days. The average humidity of 80% adds a touch of moisture to the air, making it perfect for enjoying lush landscapes and vibrant scenery.
In May in Mountain View, the average temperature is 23°C (74°F), with maximums reaching up to 28°C (83°F) and minimums dipping as low as 18°C (65°F). This mild climate makes Mountain View an ideal destination for travelers looking to enjoy pleasant weather and outdoor activities.
In Mountain View in May, the total precipitation amount is 127 mm (5.0 in) spread over 24 days.
In Mountain View in May humidity is 80%. With an average temperature of 23°C (74°F), this humidity feels like walking through a warm, damp blanket, making travel feel sticky and muggy, where every step leaves you yearning for a cool breeze.
In Mountain View in May, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Mountain View.
UV Risk Categories
Weather in Mountain View varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Mountain View, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 22°C (71°F) | 118 mm (4.7 inches) | 79% | very high |
| February Weather | 21°C (71°F) | 209 mm (8.2 inches) | 79% | extreme |
| March Weather | 22°C (71°F) | 154 mm (6.0 inches) | 77% | extreme |
| April Weather | 22°C (73°F) | 117 mm (4.6 inches) | 80% | extreme |
| May Weather | 23°C (74°F) | 127 mm (5.0 inches) | 80% | extreme |
| June Weather | 24°C (75°F) | 90 mm (3.5 inches) | 82% | extreme |
| July Weather | 24°C (76°F) | 97 mm (3.8 inches) | 83% | extreme |
| August Weather | 25°C (77°F) | 188 mm (7.4 inches) | 84% | extreme |
| September Weather | 25°C (77°F) | 93 mm (3.7 inches) | 82% | extreme |
| October Weather | 24°C (76°F) | 137 mm (5.4 inches) | 83% | extreme |
| November Weather | 23°C (74°F) | 108 mm (4.2 inches) | 83% | very high |
| December Weather | 22°C (72°F) | 180 mm (7.1 inches) | 81% | very high |