Monterey, CA Climate & Monthly Averages
The climate of Monterey
Monterey has one of the steadier climates in our dataset. Average highs move only 5°C across the whole year - from 58°F (15°C) in February to 67°F (20°C) in September - so the practical difference between seasons here is rainfall and daylight, not warmth.
Climate quick facts
- Hottest month: September - highs near 67°F (20°C)
- Coldest month: February - highs near 58°F (15°C)
- Decade extremes (2015-2024): 90°F (32°C) high · 36°F (2°C) low
- Wettest month: January (10 rainy days) · Sunniest: June (12.5 h sun/day)
- Climate type: oceanic
- Annual swing: 5°C between the average warmest and coolest month · day to night: 6°C
- Average humidity: 81%
Temperatures through the year
Between the average September and the average February lie 5°C, a narrower spread than about 86% of the cities we track. February sits at the other end of the year: 58°F (15°C) by day, 47°F (8°C) at night. September is the warm end of the year, averaging 67°F (20°C) by day and 56°F (14°C) overnight. Across the gridded 2015-2024 daily record, the highest daily maximum for this location was 90°F (32°C) and the lowest daily minimum 36°F (2°C). Three of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is August through October.
Rain, sun and snow
5 months average under 20 mm of rain, the longest unbroken stretch running June through October. June is the brightest month at 12.5 hours of sun a day, against an annual average of 10.2. January is the wettest month at 4.7 inches (120 mm) over 10 days; August is the driest.
How Monterey compares
- Afternoons run 6°C above the following night - a flatter daily curve than all but 7% of the 3496 cities we track.
- Rain or snow reaches the ground on 59 days a year - fewer wet days than all but 12% of the 3496 cities we track.
- Relative humidity averages 81% - more humid than 88% of the 3496 cities we track.
Ranked against every city in our dataset, each measured on the same ten-year window.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 58° | 48° | 10 | 4.7 in | 7.4 h/day | 9.9 h | 32% | 79% |
| February | 58° | 47° | 8 | 3.3 in | 9.1 h/day | 10.8 h | 29% | 75% |
| March | 58° | 48° | 12 | 4.0 in | 9.6 h/day | 11.9 h | 38% | 79% |
| April | 58° | 49° | 5 | 1.3 in | 11.0 h/day | 13.1 h | 16% | 81% |
| May | 59° | 51° | 4 | 0.8 in | 11.9 h/day | 14.1 h | 11% | 83% |
| June | 62° | 53° | 1 | 0.1 in | 12.5 h/day | 14.6 h | 3% | 84% |
| July | 63° | 55° | 0 | 0.1 in | 12.0 h/day | 14.4 h | 1% | 87% |
| August | 65° | 56° | 0 | 0.0 in | 11.4 h/day | 13.5 h | 0% | 87% |
| September | 67° | 56° | 1 | 0.2 in | 11.0 h/day | 12.4 h | 3% | 83% |
| October | 67° | 54° | 3 | 0.8 in | 9.9 h/day | 11.2 h | 9% | 77% |
| November | 62° | 50° | 6 | 2.3 in | 8.9 h/day | 10.2 h | 20% | 75% |
| December | 58° | 48° | 9 | 4.2 in | 7.4 h/day | 9.7 h | 30% | 77% |
Monterey month by month
Average high and low for each month, with the bar showing where it sits in Monterey's year (left is the coldest night, right is the warmest afternoon).
January
- Rain
- 10 days
- Sunshine
- 7.4 h
- Daylight
- 9.9 h
February
- Rain
- 8 days
- Sunshine
- 9.1 h
- Daylight
- 10.8 h
March
- Rain
- 12 days
- Sunshine
- 9.6 h
- Daylight
- 11.9 h
April
- Rain
- 5 days
- Sunshine
- 11.0 h
- Daylight
- 13.1 h
May
- Rain
- 4 days
- Sunshine
- 11.9 h
- Daylight
- 14.1 h
June
- Rain
- 1 day
- Sunshine
- 12.5 h
- Daylight
- 14.6 h
July
- Rain
- 0 days
- Sunshine
- 12.0 h
- Daylight
- 14.4 h
August
- Rain
- 0 days
- Sunshine
- 11.4 h
- Daylight
- 13.5 h
September
- Rain
- 1 day
- Sunshine
- 11.0 h
- Daylight
- 12.4 h
October
- Rain
- 3 days
- Sunshine
- 9.9 h
- Daylight
- 11.2 h
November
- Rain
- 6 days
- Sunshine
- 8.9 h
- Daylight
- 10.2 h
December
- Rain
- 9 days
- Sunshine
- 7.4 h
- Daylight
- 9.7 h
Warmer places to go, by month: January · February · March · April · May · June · July · August · September · October · November · December
Seasons in Monterey
Spring (March through May)
Spring is crisp but comfortable here - highs near 59°F (15°C), nights near 49°F (10°C), and expect showers on roughly 20 days across the season. Daylight is generous - around 10.8 hours of sun a day.
Summer (June through August)
Through summer, Monterey is crisp but comfortable: 64°F (18°C) by day, 55°F (13°C) after dark, and precipitation is sparse, near 6 mm (0.2 in) for the season. Daylight is generous - around 12.0 hours of sun a day.
Fall (September through November)
Fall is mild here - highs near 65°F (18°C), nights near 54°F (12°C), and rain comes on about 10 days over the three months.
Winter (December through February)
Through winter, Monterey is mild: 58°F (15°C) by day, 47°F (9°C) after dark, and expect showers on roughly 28 days across the season.
Climate questions, answered
Does Monterey have seasons?
Is Monterey humid?
What should I pack for Monterey?
How much do temperatures drop at night in Monterey?
How sunny is Monterey?
How warm is Monterey on average?
Best time to visit Monterey
May to October is the sweet spot for Monterey - the dry season is running but the afternoons are still bearable. Expect 64°F (18°C) in the afternoon and around 1 days of rain in a typical month of it. For the same question asked the other way round, see where else is warm in May.
Pack for Monterey with rain gear if you travel around January. Note the gap between afternoon and night: September pairs 67°F (20°C) with 56°F (14°C).
Monterey temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need the precipitation in other units? The mm-to-inches rainfall converter handles it.