Marin County

Marin County Weather in May

Average temperatures, rainfall, sunshine and the best places to visit in Marin County, the United States of America in May.

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Novato San Rafael Mill Valley Sausalito

Are you planning a trip a to Marin County, the United States of America in May and wondering what kind of weather to expect? This page has all the details you need.

What to Expect in Marin County in May

Marin County, the United States of America is a region in the United States of America. May in Marin County generally has temperatures that range from mild to warm, with low precipitation.

Temperatures

Based on our climate data spanning from 1990-2020, the average maximum temperature is mild in Sausalito at 18°C (64°F) to warm in Novato at 22°C (72°F). Nighttime temperatures generally drop to 9°C (48°F) in Novato and 10°C (50°F) in Sausalito.

For a closer look at conditions across Marin County, the United States of America, refer to the map below.

Precipitation

In May, precipitation varies across different areas. From low rainfall in Novato with an average of 12 mm (0.5 in) to low rainfall in Mill Valley with 17 mm (0.7 in).

Average sunshine

Sunshine is generally plentiful throughout many areas. Novato enjoys about 324 hours of sunlight, ideal for those seeking sunny weather.

Explore Marin County by month

Pick a month to see the average temperature, rainfall and sunshine in Marin County — and find the best time to visit. (based on Novato)

January14°C (57°F) February16°C (61°F) March18°C (64°F) April20°C (68°F) May22°C (72°F) June26°C (79°F) This monthJuly27°C (81°F) August27°C (81°F) September28°C (82°F) October24°C (75°F) November18°C (64°F) December14°C (57°F)
Best Time to Visit Marin County →

Best Places to Visit in Marin County in May

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Marin County.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Marin County

What is the weather like in May for some of the most popular destinations in Marin County, the United States of America?

Temperature range in Marin County (May)

Precipitation variation in Marin County (May)

Novato

In May Novato generally has high temperatures with maximum daytime temperatures around 22°C (72°F), minimum nighttime temperatures around 9°C (48°F) and low monthly rainfall. So on average the conditions are perfect that month.

« April
May
June »
April
May
June
Max temperature
20°C (68°F)
22°C (72°F)
26°C (79°F)
Min temperature
7°C (45°F)
9°C (48°F)
10°C (50°F)
Monthly sun hours
310 hours
324 hours
312 hours
Monthly rainfall
48 mm (1.9 in)
12 mm (0.5 in)
7.2 mm (0.3 in)
Monthly rainy days
7 days
3 days
a single day
Weather conditions
perfect
perfect
perfect
Climate in Novato →

San Rafael

In May San Rafael generally has pleasant temperatures with maximum daytime temperatures around 21°C (70°F), minimum nighttime temperatures around 10°C (50°F) and low monthly rainfall. So on average the conditions are perfect that month.

« April
May
June »
April
May
June
Max temperature
19°C (66°F)
21°C (70°F)
24°C (75°F)
Min temperature
8°C (46°F)
10°C (50°F)
11°C (52°F)
Monthly sun hours
310 hours
324 hours
312 hours
Monthly rainfall
65 mm (2.6 in)
14 mm (0.6 in)
8.2 mm (0.3 in)
Monthly rainy days
7 days
3 days
a single day
Weather conditions
pleasant
perfect
perfect
Climate in San Rafael →

Mill Valley

In May Mill Valley generally has pleasant temperatures with maximum daytime temperatures around 20°C (68°F), minimum nighttime temperatures around 10°C (50°F) and low monthly rainfall. So on average the conditions are perfect that month.

« April
May
June »
April
May
June
Max temperature
18°C (64°F)
20°C (68°F)
22°C (72°F)
Min temperature
8°C (46°F)
10°C (50°F)
11°C (52°F)
Monthly sun hours
310 hours
324 hours
312 hours
Monthly rainfall
66 mm (2.6 in)
17 mm (0.7 in)
9 mm (0.4 in)
Monthly rainy days
8 days
3 days
2 days
Weather conditions
pleasant
perfect
perfect
Climate in Mill Valley →

Sausalito

In May Sausalito generally has moderate temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 10°C (50°F) and low monthly rainfall. So on average the conditions are perfect that month.

« April
May
June »
April
May
June
Max temperature
17°C (63°F)
18°C (64°F)
19°C (66°F)
Min temperature
9°C (48°F)
10°C (50°F)
11°C (52°F)
Monthly sun hours
310 hours
324 hours
312 hours
Monthly rainfall
53 mm (2.1 in)
13 mm (0.5 in)
7.7 mm (0.3 in)
Monthly rainy days
8 days
3 days
a single day
Weather conditions
tolerable
perfect
perfect
Climate in Sausalito →

Fairfax

In May Fairfax generally has high temperatures with maximum daytime temperatures around 22°C (72°F), minimum nighttime temperatures around 10°C (50°F) and low monthly rainfall. So on average the conditions are perfect that month.

« April
May
June »
April
May
June
Max temperature
20°C (68°F)
22°C (72°F)
26°C (79°F)
Min temperature
8°C (46°F)
10°C (50°F)
11°C (52°F)
Monthly sun hours
310 hours
324 hours
312 hours
Monthly rainfall
75 mm (3 in)
16 mm (0.6 in)
8.5 mm (0.3 in)
Monthly rainy days
8 days
3 days
a single day
Weather conditions
perfect
perfect
perfect
Climate in Fairfax →

Is your destination not in the list? Have a look at all destinations in Marin County, in the United States of America.

Popular cities in May

Day & night temperatures, rainfall and average weather in Marin County in May.

City Weather Day temp Night temp Rainfall
Novato 22°C (72°F) 9°C (48°F) 12 mm (0.5 in)
San Rafael 21°C (70°F) 10°C (50°F) 14 mm (0.6 in)
Mill Valley 20°C (68°F) 10°C (50°F) 17 mm (0.7 in)
Sausalito 18°C (64°F) 10°C (50°F) 13 mm (0.5 in)
Fairfax 22°C (72°F) 10°C (50°F) 16 mm (0.6 in)
Larkspur 20°C (68°F) 10°C (50°F) 16 mm (0.6 in)

Marin County weather in May: frequently asked questions

What is the weather like in Marin County, the United States of America in May?

Expect perfect weather across Marin County, the United States of America in May. The popular destination of Novato averages 22°C (72°F) by day and 9°C (48°F) at night during this month.

What is the average temperature in Marin County, the United States of America in May?

Novato averages a daytime maximum of 22°C (72°F) in May, with overnight lows close to 9°C (48°F).

Does Marin County, the United States of America get a lot of rain in May?

Rain is generally moderate to light in Marin County, the United States of America during May, with Novato averaging close to 12 mm (0.5 in).

Is May a Good Time to Visit Marin County, the United States of America?

We believe that May is one of the best times to visit Marin County, the United States of America with overall perfect weather in Novato.

On average, the best time to visit Marin County, the United States of America is in April, May, June, July, August, September and October with generally perfect weather in Novato. The weather in January, February and December, on the other hand, tends to be unpleasant.

Interested in more climate information?

We have much more information about the climate in Marin County.

Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed historical weather averages for many cities in the United States of America.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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