Monterey weather by month & the best time to visit
United States · seaside town · oceanic / maritime climate
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The best time to visit Monterey is August — its sunniest month (Sunshine Score 99/100), with September and July close behind. Monterey averages about 3,366 hours of sunshine a year. Daytime highs around 20°C / 68°F and roughly 1 mm of rain in August.
When is the best time to visit Monterey?
For sunshine, the best time to visit Monterey is August, then September and July. The dullest month is December (40/100, 106 mm of rain). The full month-by-month picture is in the table below.
How sunny is Monterey?
Monterey is one of the sunniest places on Earth: about 3,366 hours of sunshine a year. 59 Sunshine Score points separate August (99) from December (40), so the month you pick matters. It ranks #45 of 580 destinations in United States for annual sunshine, above the national median of 2,279 hours. Rain has a clear season: the wettest stretch, around January, carries about 58% of the annual 480 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 42 | 14° / 57°F | 9° / 48°F | 86 mm | 2 | 14° / 57°F |
| February | 42 | 14° / 57°F | 9° / 48°F | 86 mm | 3 | 14° / 57°F |
| March | 50 | 15° / 59°F | 9° / 48°F | 70 mm | 5 | 14° / 57°F |
| April | 54 | 15° / 59°F | 9° / 48°F | 36 mm | 7 | 14° / 57°F |
| May | 72 | 17° / 63°F | 10° / 50°F | 14 mm | 8 | 13° / 55°F |
| June | 82 | 18° / 64°F | 11° / 52°F | 4 mm | 9 | 13° / 55°F |
| July | 91 | 19° / 66°F | 13° / 55°F | 1 mm | 10 | 15° / 59°F |
| August | 99 | 20° / 68°F | 13° / 55°F | 1 mm | 9 | 14° / 57°F |
| September | 98 | 20° / 68°F | 13° / 55°F | 5 mm | 7 | 15° / 59°F |
| October | 87 | 19° / 66°F | 12° / 54°F | 23 mm | 5 | 15° / 59°F |
| November | 68 | 17° / 63°F | 11° / 52°F | 48 mm | 3 | 13° / 55°F |
| December | 40 | 14° / 57°F | 9° / 48°F | 106 mm | 2 | 13° / 55°F |
Sea temperature in Monterey by month
The sea off Monterey is warmest in July at around 15°C / 59°F, and coolest in May at 13°C / 55°F. It never reaches comfortable swimming temperatures (21°C+). Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
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Head-to-head
How Monterey compares month by month: Monterey vs San Francisco · Monterey vs Fresno · Monterey vs Santa Rosa · Monterey vs San Luis Obispo · all comparisons
Monterey: questions and answers
What kind of destination is Monterey?
Monterey is a seaside town in United States with a oceanic / maritime climate — the sea reaches 15°C at its warmest.
How many hours of sunshine does Monterey get a year?
Monterey gets about 3,366 hours of sunshine a year, at its best around August.
When is the best time to visit Monterey?
The sunniest time to visit Monterey is August, when the Sunshine Score peaks at 99/100 (with September and July close behind). Expect daytime highs around 20°C / 68°F.
What is the least sunny month in Monterey?
December is the least sunny month in Monterey, scoring 40/100 with about 106 mm of rain.
What is the sea temperature in Monterey?
The sea in Monterey ranges from about 13°C (May) to 15°C (July). Month-by-month sea temperatures are on this page.
How strong is the sun in Monterey?
The typical midday UV index in Monterey peaks around 10 (very high) in July, easing to about 2 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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