Average temperatures, rainfall and packing tips for San Diego, United States in May
May in San Diego is typically mild, with average daytime highs around 20°C and nights near 13°C. Temperature-wise it sits mid-range for San Diego (the 6th warmest month).
May is essentially dry in San Diego - rainfall is negligible on average.
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In May, San Diego averages a daytime high of about 20°C and a night-time low of around 13°C, based on recent historical data.
May is essentially dry in San Diego - rainfall is negligible on average.
May is one of the most comfortable months to visit San Diego - daytime temperatures sit in a pleasant range and it's a good pick for sightseeing and time outdoors.