San Rafael
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San Rafael Weather in September

September in San Rafael averages 26°C (79°F) during the day and 12°C (54°F) at night. With only 4 mm (0.2 in) of rainfall expected on average, it's a largely dry month.

Rainfall in San Rafael in September

Historically, approximately a single day this month are expected to have rain, averaging 4 mm (0.2 in). On the rare occasion it rains this month, it usually amounts to very little.

Temperature in San Rafael in September

September is one of the better months to visit San Rafael. Expect 26°C (79°F) during the day and 12°C (54°F) at night. During September, you'll experience the summer season. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights cool down to 12°C (54°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions. On average, this month sees the highest temperatures of the year. Worth packing a few lighter outfits.

Sunshine in San Rafael in September

Expect sunny days throughout the month, with an estimated 270 hours of sunshine. This makes it a pleasant time to visit San Rafael.

So this is a great month to visit if you prefer dry days with pleasant temperatures.

San Rafael Temperature in September

Min Temperature
12°C (54°F)
Max Temperature
26°C (79°F)
Chance of Rain
3%
Precipitation
4 mm (0.2 in)
Rainy days
a single day
Humidity
73% *
Sunshine
270 hours *
Percentage Sunshine
73% *
* Data from: San Francisco, the United States of America (41 KM, 25 Miles).

San Rafael Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in San Rafael - and find the best time to visit.

Best Places in the United States of America in September

Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →

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).

What to Wear in San Rafael in September

Warm but pleasant conditions in San Rafael in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Dry conditions mean you won't need to worry about rain protection. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in San Rafael in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

  • Swimming
    10/10
  • Cycling
    8/10
  • Walking
    8/10
  • Barbeque
    10/10
  • Camping
    10/10
  • Outdoor sports
    8/10

San Rafael 3-Day Forecast

Popular in September

Where to go in September - average daytime high across popular destinations.

Bucket list

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