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Monterey, United States · Temperate oceanic

Monterey: best months to visit

September (8.1/10) · December (4.3/10).

📅 Data updated: October 2026 🛰️ ERA5 · 10 years 📍 36.60°N · 121.89°W
⚡ Quick answer
September
Depends on your goals
8.1/10
☀️ Sep
Top score (8.1/10)
🌤️ Aug
Alt. (8.0/10)
Dec
Plus rude (4.3/10)
🌊 Seaside☀️ Bright🍴 Gastronomy
Photo par Ryan Parker via Unsplash
Decide

When to visit Monterey?

The decision rests on several criteria. Climate score, tourist crowds and feasible activities.

Verdict: In Monterey, September and August clearly stand out. December concentrates the least favourable conditions.
Top & avoid
🏆 September · 8.1 August · 8.0 June · 7.9 July · 7.9 ⚠️ December · 4.3
4.4
Jan
4.5
Feb
4.4
Mar
7.3
Apr
7.4
May
7.9
Jun
7.9
Jul
8.0
Aug
8.1
Sep
7.8
Oct
7.4
Nov
4.3
Dec
Best period · ≥ 7 Decent period · 4 – 7 Tough conditions · < 4

What you grasp in 5 seconds

Monterey offers 8 comfortable months, without any month really to avoid. The gap stays moderate: 8.1 in September vs 4.3 in December.

What to check next

Your tolerance for crowds and budget. The best months concentrate tourist saturation and higher prices. Shoulder seasons offer a good compromise.

Next action

Scroll down to the detailed table to compare month by month, then open the page of the month that interests you.

How we calculate the score

The score combines 4 weighted criteria using 10 years of real climate data (ERA5).

Source : ERA5 · Open-Meteo · 10 years (2016–2025) · Full methodology →

Understand

Compare all 12 months

Month-by-month details: temperature, rain, sunshine, score and verdict.

✅ 8 comfortable months (Apr · May · Jun · Jul · Aug · Sep · Oct · Nov)
MonthT° minT° maxRain %mm/daySunScoreVerdict
🌥️ January →9°C15°C24%3.9mm4.9h4.4/10Decent period
🌥️ February →9°C15°C21%2.9mm6.3h4.5/10Decent period
🌥️ March →9°C15°C26%3.3mm5.8h4.4/10Decent period
⛅ April →10°C14°C12%1.1mm7.8h7.3/10Best period
⛅ May →11°C15°C9%0.7mm8.4h7.4/10Best period
☀️ June →12°C17°C3%0.1mm9.4h7.9/10Best period
☀️ July →12°C17°C2%0.1mm9.0h7.9/10Best period
☀️ August →14°C18°C1%0.0mm8.5h8.0/10Best period
☀️ September →14°C19°C3%0.2mm8.1h8.1/10Best period
☀️ October →13°C19°C7%0.6mm6.9h7.8/10Best period
⛅ November →10°C17°C16%1.9mm6.0h7.4/10Best period
🌥️ December →9°C14°C23%3.4mm4.8h4.3/10Decent period
📊 Quick read
Optimal window
Apr → Nov
Good transition
Mar · Dec
Tough period
none
🌡️ Detailed conditions (September)
🌡️ Feel
Comfortable
☀️ UV
6.5 · Moderate-Strong
💧 Humidity feel
13°C · Pleasant
☔ Rain
3% · 0.2 mm/day
🌅 Sunshine
8.1h/day
10-year trend

Annual temperatures — Monterey

Min/max temperature curves observed over the past 10 years (ERA5). Shows climate stability and trend.

T° maxT° meanT° min8°10°12°14°16°18°201620172018201920202021202220232024202517.1° — decade peak (2017)+-0.64°C / decade
Tailor

For your trip

A few angles depending on what kind of trip you are planning.

🏖️ Beaches: Jun-Sept🌊 Swell: Sept-Mar🚤 Water activities
Book

Plan your trip

Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.

🎟️ Activities & tours · Monterey

GetYourGuide selection · free cancellation

See all →
Affiliate link · GetYourGuide
Practical info

What you need to know before you go

Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a beach holiday.

Country · United States

🗣️LanguageEnglish
💶CurrencyUS Dollar ($)
🚗DrivingRight-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘExpensive · 4/5

🌡️ Climate

🌍Climate typeTemperate oceanic
📈Climate trend ⓘStable
🔥Hottest monthSeptember · 19°C
❄️Coolest monthApril · 14°C
🌧️Rainiest month ⓘMarch · 26%

🏖️ Beach holiday

📅Peak seasonJuin → Sept
🏖️Swell (Sept–Mar) ⓘModérée
Explore

Related destinations & guides

If this destination doesn't fit your dates, here are alternatives and guides.

Location

Where is Monterey ?

Global position + regional geographic context.

🌍 World
🔍 Geographic context
Temperate oceanic climate with a 8.1 → 4.3 gap between best and worst month. 10 years of ERA5 data to choose by project.
36.60°N · 121.89°W
Questions

Frequently asked questions

What is the best time to visit Monterey?
August is the best month with 18.0°C highs, 14.0°C lows, 8.5h of sunshine and 1.0% rainy days. The months of August & September offer comparable conditions.
How many hours of sunshine does Monterey get in August?
Monterey averages 8.5 sunshine hours per day in August. It is the sunniest month with a climate score of 7.5/10.
What is the rainiest month in Monterey?
December is the most unfavourable month with December has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Monterey in August?
In August, overnight lows reach 14.0°C, while afternoon highs average 18.0°C.
Is Monterey good in winter?
In winter (December-February), Monterey scores 4.2/10 on average — Difficult period — prefer the peak season.. The best month overall remains August with a score of 7.5/10.
When should you avoid Monterey?
December is the most difficult month to visit Monterey, with December has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.