Sereno del Mar has some of the coolest summers among U.S. towns
Midwinter brings lows of about 44°. Winters are mild: January nights here are milder than in 92% of U.S. towns. Warming shows here too: 1.3° more than in 1901–2000, led by January. Comfortable outdoor weather lasts from May to October, with highs of 63–69°.
A year in Sereno del Mar at a glance
Each month’s typical high and low, and what it brings.
What stands out about Sereno del Mar’s climate
Compared with towns across the U.S., with Sereno del Mar’s place in California beside it.
What a year in Sereno del Mar feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
Frost is rare
Frost and day counts come from NOAA’s station at Bodega 6 Wsw, CA, 4 miles from the town’s center, 100 ft lower.
The 2023 USDA map puts Sereno del Mar’s center in zone 10a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 32°. Plant labels use the zone; frost dates tell you when to plant.
About 53 inches of rain a year
December is the wettest month and July the driest.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Sereno del Mar
Nearly all of the work is heating: a normal year has almost no cooling days. Months averaging under 55° run from November through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Bodega 6 Wsw, CA.
Living with Sereno del Mar’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
Zone 10a. Frost comes about 1 winter in 6, so tender plants can often stay out through winter.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August, September and October. 0.4 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Sereno del Mar from natural hazards, landslides are the largest share (37%). Normals are averages; the hazards page covers the extremes.
Natural hazards →Sereno del Mar and similar climates
TownRatings has no climate map of the towns around Sereno del Mar yet.
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Sereno del Mar averaged 1.3° warmer than the 1900s. The biggest change is in January (+2.0°).
A smaller shift than in 54% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Sereno del Mar compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Sereno del Mar’s place among California’s.
Sereno del Mar weather by month
Highs, lows and precipitation from NOAA’s grid at Sereno del Mar’s center. 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 56° | 44° | 10.4" | 47° – 53° |
| February | 58° | 44° | 10.1" | 47° – 56° |
| March | 59° | 45° | 7.1" | 46° – 56° |
| April | 60° | 46° | 3.8" | 49° – 56° |
| May | 63° | 48° | 1.7" | 52° – 59° |
| June | 67° | 50° | 0.5" | 55° – 60° |
| July | 68° | 52° | 0.0" | 57° – 62° |
| August | 69° | 53° | 0.1" | 58° – 65° |
| September | 69° | 53° | 0.2" | 58° – 65° |
| October | 67° | 50° | 2.3" | 56° – 64° |
| November | 61° | 47° | 5.7" | 48° – 57° |
| December | 56° | 44° | 11.1" | 47° – 55° |
| Year | 63° | 48° | 52.9" |
How much a month can swing
A normal is an average. March swings the most: from 1991 to 2020 its average ranged from 46° to 56°. June is the most reliable, staying within 5°.
Where Sereno del Mar’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Sereno del Mar’s center.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Bodega 6 Wsw, CA, 4 miles from the town’s center, 100 ft lower; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Sereno del Mar’s climate
What is the weather like in Sereno del Mar?
A typical July afternoon reaches 68°, a January night drops to 44°. Milder January nights than 92% of U.S. towns; cooler July afternoons than all but 53 U.S. towns.
How cold does it get in Sereno del Mar in winter?
January nights average 44°. A night at 32° or below comes in only some winters (0.6 a year on average). In the coldest January of the last 30 years the month averaged 47°.
How hot does it get in Sereno del Mar?
July, with a typical high of 68°. 90° days are rare: none in a normal year at Bodega 6 Wsw, CA.
When is the first and last frost in Sereno del Mar?
Most years have no frost at all: a 32° night comes in about 18% of winters at Bodega 6 Wsw, CA, usually in December or January.
What growing zone is Sereno del Mar in?
Zone 10a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 32°.
What is the best time of year to visit Sereno del Mar?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, July, August, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Sereno del Mar getting warmer?
Yes: 1991–2020 averaged 1.3° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 54% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Sereno del Mar.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.