Weather in San Bernardino in May
San Bernardino, United States averages a high of 25.5°C (77.9°F) and low of 12.2°C (54°F) in May, with 2 rain days and 12.8 hours of daily sunshine. Travel score: 95.5/100 (Excellent). The best time to visit San Bernardino is June.
High
26°C78°F
Low
12°C54°F
🌧️
2
rain days
☀️
12.8
hrs/day sunshine
💧
59%
humidity
96— Excellent
May in San Bernardino is warm and dry — ideal for sightseeing and outdoor activities.
What are the average temperatures in San Bernardino?
How much does it rain in San Bernardino in May?
San Bernardino receives an average of 11.7mm of rainfall across 2 rainy days in May. The annual total is 362.8mm.
What should I pack for San Bernardino in May?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 26°C
🧴
Sunscreen SPF 30+
13 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Evening jacket or cardigan
Temperature drops 13°C from day to night
Traveling to United States in May?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31