Sereno del Mar, CA climate
Sereno del Mar has warm winters and cool summers, with plenty of rain. A typical July afternoon reaches 68°, a January night drops to 44°.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Sereno del Mar feels like
Winter
Spring
Summer
Fall
Sereno del Mar weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 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" |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Sereno del Mar
Sereno del Mar gets 53 inches of rain and melted snow a year. December is the wettest month and July the driest.
A year-round growing season
Heating and cooling a home in Sereno del Mar
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Sereno del Mar, 100% of that work is heating and 0% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
How Sereno del Mar compares
Compared with every U.S. town and city on TownTapestry, each counted once.
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°). The shift is larger than in 57% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Sereno del Mar’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. March swings the most: between 1991 and 2020 its average temperature ranged from 46° to 56°. June is the most reliable, staying within 5°.
Common questions about Sereno del Mar’s climate
What is the coldest month in Sereno del Mar?
January, with a typical high of 56° and a low of 44°.
What is the hottest month in Sereno del Mar?
September, with a typical high of 69° and a low of 53°.
When is the first frost in Sereno del Mar?
Frost is uncommon. Only 18% of years see a night at 32° or below.
What is the rainiest month in Sereno del Mar?
December, with 11.1 inches of rain and melted snow. The year totals 53 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Sereno del Mar itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Bodega 6 Wsw, CA (4 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.