Month-by-month travel weather
San Diego May weather
San Diego, United States · May
May Gray can make the beach feel cooler than expected
May warms up, but coastal areas can see cloudy, cooler mornings that clear later in the day.
Afternoons can feel warm quickly, then evenings cool down—thin layers help.
May averages at a glance
Average low
around 14–16°C
Average high
around 20–23°C
Average precipitation
around 0–10 mm
Rainy days
about 0–1 days
What to wear in May in San Diego
Actual feel will change with wind and rain, but use the suggestions below to build a comfortable layered outfit.
- • T-shirts + thin layer for coastal mornings/evenings.
- • Sunglasses/sunscreen help.
- • A light wind layer can be useful on the coast.
Travel tips for visiting San Diego in May
- • If your day includes the beach, plan for a cooler morning window.
- • Afternoon sun can feel strong—pace long walks accordingly.
May weather in San Diego — FAQ
Q. Why can May be cloudy?
A. A coastal marine layer can bring cloudy mornings that clear later.
Q. Is May hot?
A. Often warm, but the coast can feel cool in the morning.
Explore San Diego
These pages are connected so you can compare conditions and decide for yourself.