Park climate1991–2020 climate normals25 m source elevationNASA POWER

Detailed twelve-month climatology records for temperature, wind, and precipitation patterns.

Greater Farallones National Marine Sanctuary Monthly Climate Normals and Atmospheric Data

Name: Greater Farallones National Marine Sanctuary monthly climate normals
Creator: NASA POWER

Access long-term climate normals for Greater Farallones National Marine Sanctuary based on NASA POWER data from 1991 to 2020. Measurements derived from a representative coordinate at 24.78 meters in elevation reflect average conditions across the calendar year. Explore specific data points for mean, minimum, and maximum temperatures; daily precipitation rates; relative humidity; wind speed; and total daylight hours.

View park overview Browse climate zones

A stylized illustration of a rocky coastal scene with waves washing onto a dark beach and hills in the distance.

Annual climate pattern

Long-term monthly temperature averages and daily precipitation rates across the twelve-month cycle

Greater Farallones National Marine Sanctuary Annual Climate Normals and Monthly Temperature Rhythms

Average minimum, mean, and maximum temperatures track a steady thermal progression across the twelve months for Greater Farallones National Marine Sanctuary, establishing the long-term baseline for this coordinate. Average daily precipitation rates shift alongside these monthly temperature normals from NASA POWER records between 1991 and 2020.

Mean temperatureAverage minimum–maximum rangePrecipitation

Annual mean: 12.8 °C
Warmest month: September
Coolest month: January
Wettest month: December

Twelve-month climate

Compare twelve-month averages for temperature, precipitation rates, relative humidity, wind speed, and calculated daylight.

Greater Farallones National Marine Sanctuary Monthly Climate and Weather Patterns Across the Calendar Year

Evaluating twelve months of historical climate data provides a comprehensive baseline of temperature bounds and average daily precipitation rates at a representative marine coordinate. Examining relative humidity, wind speed, and calculated average daylight hours across the annual cycle reveals distinct environmental shifts over the protected marine sanctuary.

	Mean temperature	Precipitation	Humidity	Wind speed	Daylight
January	10.8 °C6.2° to 15°	4.5 mm/day	85.3%	4.8 m/s	9.7 hours
February	11.1 °C7° to 15.8°	4.6 mm/day	84.9%	5.2 m/s	10.6 hours
March	11.4 °C7.6° to 16.7°	3.3 mm/day	85.2%	5.4 m/s	11.8 hours
April	11.6 °C7.8° to 17.7°	1.6 mm/day	85.5%	5.8 m/s	13 hours
May	12.3 °C9.2° to 18.3°	0.9 mm/day	87.5%	6 m/s	14.1 hours
June	13.3 °C10.2° to 19.4°	0.4 mm/day	86.9%	6.3 m/s	14.6 hours
July	14.1 °C11° to 19.2°	0.1 mm/day	87.9%	5.2 m/s	14.3 hours
August	15.1 °C12° to 21.1°	0.1 mm/day	86.8%	5.1 m/s	13.4 hours
September	15.5 °C11.8° to 22.8°	0.3 mm/day	83.6%	4.6 m/s	12.2 hours
October	14.7 °C10.7° to 22.7°	1.1 mm/day	80.8%	4.5 m/s	11 hours
November	12.7 °C8.1° to 18.7°	2.6 mm/day	82.5%	4.6 m/s	9.9 hours
December	11 °C6.3° to 15.3°	4.6 mm/day	83.5%	5.1 m/s	9.4 hours

Compare two months

See two months side by side and how much they differ. Both use the same 1991–2020 climate normals and NASA POWER data point as the table above, so they show typical conditions, not a forecast.

First month

Second month

Mean temperature: January: 10.8 °C; September: 15.5 °C; Change from January to September: +4.7 °C
Precipitation: January: 4.5 mm/day; September: 0.3 mm/day; Change from January to September: -4.2 mm/day
Daylight: January: 9.7 hours; September: 12.2 hours; Change from January to September: +2.5 hours

Calculated climate highlights

Warmest, coolest, wettest, and windiest months derived from long-term climatology normals

Greater Farallones National Marine Sanctuary Calculated Monthly Climate Highlights and Averages

Calculated monthly comparisons summarize baseline temperature, precipitation, humidity, wind, and daylight variations across the year at a representative coordinate. These findings represent comparative monthly averages rather than observed weather extremes or localized conditions.

Warmest month: September15.5 °C
Coolest month: January10.8 °C
Wettest month: December4.6 mm/day
Driest month: July0.1 mm/day
Most humid month: July87.9%
Windiest month: June6.3 m/s
Longest daylight: June14.6 hours

Interactive climate map

National park climate map

Open the climate map to compare monthly temperature, precipitation, and other averages.

Global National Park Climate Map

Other park climates

Explore monthly temperature, precipitation, and atmospheric normals across diverse geographic settings.

Comparing Greater Farallones National Marine Sanctuary Climate Profiles With Other Protected Areas

Analyzing standardized monthly temperature and precipitation normals across protected areas reveals distinct atmospheric rhythms and regional contrasts. Examining these long-term environmental patterns provides broader context for coastal settings and alternative protected landscapes.