Park climate1991–2020 climate normals10 m source elevationNASA POWER

Review annual atmospheric patterns including temperature, precipitation, wind, and daylight

Channel Islands National Park: monthly climate

Name: Channel Islands National Park monthly climate normals
Creator: NASA POWER

At the representative location for Channel Islands National Park, monthly mean temperatures range from 14.5 to 20.2 °C (1991–2020). Compare precipitation, humidity, wind, and daylight for each month.

View park overview Browse climate zones

Annual climate pattern

Tracking the transition between mild maritime temperatures and variable daily precipitation rates

Channel Islands National Park Annual Climate Normals and Monthly Temperature Patterns

Long-term data reveals a mild maritime cycle where average monthly mean temperatures stay between 14.4 °C and 20.3 °C. Average daily precipitation varies from less than 0.1 millimeters in summer to 3.79 millimeters in February, reflecting decades of climatology sampled at a representative low-elevation coordinate.

Mean temperatureAverage minimum–maximum rangePrecipitation

Annual mean: 16.9 °C
Warmest month: September
Coolest month: February
Wettest month: February

Twelve-month climate

Comparing twelve months of 1991 to 2020 average temperature bounds, daily precipitation, wind speed, and daylight calculations.

Channel Islands National Park Monthly Climate Normals and Weather by Month Comparison

Atmospheric tracking at a representative low-elevation coordinate reveals how average minimum, mean, and maximum temperatures fluctuate alongside average daily precipitation rates on the Channel Islands. Comparing the complete twelve-month cycle rather than a single annual average provides a clear view of shifting relative humidity, wind speed, and calculated daylight hours across the California archipelago.

	Mean temperature	Precipitation	Humidity	Wind speed	Daylight
January	14.7 °C10.2° to 22.4°	3.5 mm/day	70.5%	4 m/s	10 hours
February	14.5 °C10.3° to 21.9°	3.8 mm/day	72.7%	4.1 m/s	10.8 hours
March	14.7 °C10.4° to 22.5°	2.5 mm/day	74.9%	4 m/s	11.8 hours
April	15.1 °C11° to 24°	0.8 mm/day	74.6%	4.2 m/s	12.9 hours
May	16.1 °C12.5° to 23.7°	0.4 mm/day	77.2%	3.8 m/s	13.8 hours
June	17.5 °C13.8° to 24.4°	0.1 mm/day	78.3%	3.3 m/s	14.2 hours
July	19.2 °C15.3° to 25.5°	0 mm/day	78.9%	2.8 m/s	14 hours
August	20.1 °C16.1° to 26.4°	0 mm/day	75.5%	2.8 m/s	13.2 hours
September	20.2 °C16.2° to 28.6°	0.1 mm/day	73.2%	3 m/s	12.2 hours
October	19.3 °C15.1° to 28.6°	0.6 mm/day	69.6%	3.4 m/s	11.1 hours
November	17.1 °C12.5° to 25.9°	1.1 mm/day	66.9%	3.7 m/s	10.2 hours
December	14.9 °C10.4° to 22.1°	2.5 mm/day	68.1%	4.1 m/s	9.8 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: February: 14.5 °C; September: 20.2 °C; Change from February to September: +5.8 °C
Precipitation: February: 3.8 mm/day; September: 0.1 mm/day; Change from February to September: -3.7 mm/day
Daylight: February: 10.8 hours; September: 12.2 hours; Change from February to September: +1.4 hours

Calculated climate highlights

Comparing long-term averages to identify the warmest, wettest, and windiest periods of the year.

Monthly Climate Highlights and Calculated Contrasts in Channel Islands National Park

Long-term climatology records from a representative coordinate clarify the warmest, coolest, wettest, and driest periods in Channel Islands National Park by identifying calculated monthly averages. Comparing monthly baselines for temperature, wind, humidity, and daylight duration reveals how the maritime climate shifts across the year without representing temporary weather extremes.

Warmest month: September20.2 °C
Coolest month: February14.5 °C
Wettest month: February3.8 mm/day
Driest month: August0 mm/day
Most humid month: July78.9%
Windiest month: April4.2 m/s
Longest daylight: June14.2 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

Analyze monthly climate patterns, temperature ranges, and precipitation rhythms across varied geographies

Compare Channel Islands National Park Climate Profiles Across Protected Landscapes

Standardized monthly climate profiles allow direct comparison of the annual temperature patterns and precipitation rhythms that define different regional landscapes. Evaluating regional profiles organized by proximity to Channel Islands National Park clarifies how wind, humidity, and daylight vary across different protected settings.

Climate profileUnited States of America