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Normal weather for Monterey in September

It's hot in September in Monterey with an average temperature of 33°C. Temperatures this month range from a low of 29°C to a high of 35°C. At night, you can expect temperatures between 16°C and 23°C.

In September, there is an average of 78 mm of precipitation, spread over 11 days. The wind speed is around 3 Bft, mostly coming from the Southeast.

Monterey in September

New York
Temperature Average Temperature
33°C 27°C
Sun High Temp
35°C 31°C
Sun Low Temp
29°C 21°C
Rain Total Precipitation
78 mm 57 mm
Rain Rainy Days
11 days 9 days

Start of September

The month of September starts in Monterey with hot temps, averaging around 35°C during the day and nights around 23°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.

Mid September

By mid-September, daytime temps drop to around 33°C, with nights around 20°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.

Since it cools down at night, it’s a good idea to wear layers. For the daytime, light clothing like shorts or a dress, and a hat and sunglasses are perfect. In the evening and morning, a T-shirt, light pants or skirt, and a light jacket are ideal.

End of September

By the end of September, the average daytime temperature in Monterey is around 32°C, while nighttime temps are about 20°C. A shower might pop up, but overall, the weather will be dry and sunny.

Because temperatures drop in the evening, wearing layers is recommended. For the daytime, light clothing like shorts or a dress, and a hat and sunglasses are perfect. In the evening and morning, a T-shirt, light pants or skirt, and a light jacket are ideal.

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UV index

The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.

Is September a good time to visit Monterey?

September is a good month to be in Monterey for sunny weather. You’ll have high temperatures and not too much rain.

The hurricane season in Monterey runs from June to November.

Temperature records for Monterey in September

Check out the climate of Monterey for all months and discover the best travel time

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Daily Temperature in September in Monterey

This chart shows the average daily high and low temperatures in September for Monterey, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.

Daily Temperature in September in Monterey

Daily Precipitation in September in Monterey

The chart below shows the average daily precipitation in September for Monterey, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.

A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 11 days of precipitation in Monterey.

Daily Precipitation in September in Monterey

Daily UV Index in September in Monterey

This chart shows the average daily UV index in September in Monterey, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.

Daily UV Index in September in Monterey

Temperature in September in Monterey Over the Years

This chart shows the average temperature in September in Monterey, measured in degrees Celsius, over the past few years.

Temperature in September in Monterey Over the Years

Total Precipitation in September in Monterey Over the Years

This chart shows the average precipitation in September in Monterey, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.

Precipitation in September in Monterey Over the Years

Daily Climate in September for Monterey

Click on any day in September to get detailed info about the usual weather on that day in Monterey. Check out the historical temperatures and precipitation over the past 10 years on this day.

Weather experiences in September in Monterey

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Average Weather in Monterey by Month

Click on a month below to see detailed weather info for Monterey. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.


Or check out the climate of Monterey for all months at once

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