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October Weather in Monterey, United States

Last updated: June 24, 2025

In Monterey, United States, the average temperature in October hovers around 17°C (62°F). However, be prepared for extremes, as temperatures can dip to a brisk -2°C (28°F) or soar to a sweltering 35°C (95°F). During this month, expect 132 mm (5.2 in) of precipitation spread over approximately 10 days, contributing to an average humidity level of 78%. Stay prepared for a mix of weather conditions!

October Temperature in Monterey

In October in Monterey, the average temperature is 17°C (62°F), with a maximum that can reach 35°C (95°F) and a minimum that can drop to -2°C (28°F). This range makes it essential for travelers to pack for both warm and chilly conditions.

October Weather in Monterey: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Monterey, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Monterey, October typically has an average temperature of 17°C (62°F), with highs reaching up to 35°C (95°F) and lows dropping to around -2°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec394551586874787672624744
Data source: Temperature data for Monterey generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

October Precipitation in Monterey

In Monterey in October, the total precipitation amount is 132 mm (5.2 in) over a span of 10 days.

October Precipitation Trends in Monterey

The chart displays monthly precipitation patterns in Monterey, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Monterey, October typically receives around 132 mm (5.2 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec10819316115313813313313011913278150
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Monterey

In Monterey in October, humidity is 78%. With an average temperature of 17°C (62°F), this humidity feels like a warm, enveloping blanket, making travel feel a bit sticky and heavy but also refreshing, as long as you're prepared with light clothing and plenty of water.

October Average Humidity in Monterey

This chart illustrates the average monthly humidity levels in Monterey, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Monterey is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%82%83%83%80%74%71%78%88%88%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Monterey

In Monterey in October, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Monterey.

Maximum UV Index Levels in Monterey for October

The chart shows the monthly maximum UV Index (UVI) for Monterey in October, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In October, the maximum UV index in Monterey typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710111111109753
Data source: Monterey October UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How October Weather in Monterey Compares to Other Months

Weather in Monterey varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Monterey, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Monterey, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)108 mm (4.3 inches)87%moderate
February Weather7°C (45°F)192 mm (7.6 inches)86%high
March Weather11°C (51°F)161 mm (6.3 inches)86%high
April Weather14°C (58°F)153 mm (6.0 inches)82%very high
May Weather20°C (68°F)138 mm (5.4 inches)82%extreme
June Weather23°C (74°F)133 mm (5.2 inches)83%extreme
July Weather25°C (78°F)133 mm (5.2 inches)80%extreme
August Weather24°C (76°F)130 mm (5.1 inches)74%very high
September Weather22°C (72°F)119 mm (4.7 inches)71%very high
October Weather17°C (62°F)132 mm (5.2 inches)78%high
November Weather9°C (48°F)78 mm (3.1 inches)88%moderate
December Weather7°C (44°F)150 mm (5.9 inches)88%moderate

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