San Mateo weather in May 2025

The temperatures in San Mateo in May are usually low and can range between 11°C and 18°C.

The wather in San Mateo in May can vary between cold and nice weather days. Expect a few rainy days but usually not more than 3.

Our weather forecast can give you a great sense of what weather to expect in San Mateo in May 2025.

If you’re planning to visit San Mateo in the near future, we highly recommend that you review the 14 day weather forecast for San Mateo before you arrive.

Temperatures

18° / 11°

Rainy Days

Snowy Days

Dry Days

Rainfall

Sun Hours

9.2

Hrs

Sun	Mon	Tue	Wed	Thu	Fri	Sat
				1 16° /8°	2 15° /9°	3 16° /8°
4 16° /9°	5 14° /8°	6 15° /9°	7 15° /9°	8 16° /8°	9 17° /9°	10 17° /9°
11 18° /9°	12 18° /9°	13 19° /10°	14 20° /10°	15 19° /11°	16 19° /11°	17 18° /10°
18 19° /10°	19 19° /10°	20 19° /10°	21 19° /10°	22 19° /9°	23 18° /9°	24 18° /10°
25 18° /10°	26 18° /10°	27 19° /9°	28 16° /10°	29 18° /9°	30 19° /9°	31 18° /9°

Explore the weather in San Mateo in other months

San Mateo annual weather

Month	Temperatures	Rainy Days	Dry Days	Rainfall	Weather	More details
January	15° / 9°	6	25	92 mm	Good	San Mateo in January
February	15° / 9°	5	23	82 mm	Good	San Mateo in February
March	16° / 9°	7	24	85 mm	Ok	San Mateo in March
April	17° / 10°	3	27	35 mm	Good	San Mateo in April
May	18° / 11°	2	29	15 mm	Good	San Mateo in May
June	21° / 13°	1	29	4 mm	Good	San Mateo in June
July	22° / 14°	0	31	1 mm	Good	San Mateo in July
August	23° / 15°	0	31	0 mm	Perfect	San Mateo in August
September	23° / 15°	0	30	3 mm	Perfect	San Mateo in September
October	21° / 14°	2	29	28 mm	Good	San Mateo in October
November	17° / 11°	4	26	51 mm	Good	San Mateo in November
December	14° / 9°	6	25	101 mm	Good	San Mateo in December

Temperatures in San Mateo in May

Rain in San Mateo in May

Weather in San Mateo in May - FAQ

What is the average temperature in San Mateo in May?

The average temperature in San Mateo in May is 11/18° C.

What is the chance of rain in San Mateo in May?

On average, there are 2 rainy days in San Mateo during May.

Weather wise, is May a good time to visit San Mateo?

The weather in San Mateo in May is good.

Can it snow in San Mateo in May?

On average, there are 0 snowy days in San Mateo in May.

More about the weather in San Mateo