Park climate1991–2020 climate normals46 m source elevationNASA POWER

Twelve month atmospheric profile featuring average temperature, precipitation, humidity, wind, and daylight data.

Channel Islands National Marine Sanctuary Monthly Climate Normals: Long Term Temperature and Precipitation Patterns

Name: Channel Islands National Marine Sanctuary monthly climate normals
Creator: NASA POWER

The climate profile for Channel Islands National Marine Sanctuary provides an analytical view of atmospheric variables based on representative data recorded from 1991 to 2020. This index details monthly average maximums, minimums, and mean temperatures alongside daily precipitation rates and relative humidity levels. Detailed wind speeds and average daylight hours characterize the annual cycle at a representative elevation of 46.33 meters, offering a precise climatological reference for this marine protected area.

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Annual climate pattern

Long term monthly temperature means and average daily precipitation rates across twelve months

Channel Islands National Marine Sanctuary Annual Climate Normals and Monthly Temperature Patterns

Average minimum, mean, and maximum temperatures move through a moderate annual cycle with peak warmth occurring during late summer months. Average daily precipitation rates follow a distinct wet and dry distribution across the calendar year based on historical climatology normals for a representative coordinate.

Mean temperatureAverage minimum–maximum rangePrecipitation

Annual mean: 15.7 °C
Warmest month: September
Coolest month: February
Wettest month: February

Twelve-month climate

Compare twelve months of average temperature bounds, daily precipitation rates, and daylight hours

Channel Islands National Marine Sanctuary Weather by Month and Climate Normals

Examine twelve distinct monthly climate records for Channel Islands National Marine Sanctuary, tracking average minimum and maximum temperatures alongside daily precipitation rates. Evaluate how relative humidity, wind speed, and calculated daylight hours shift across the calendar year at a representative coordinate.

	Mean temperature	Precipitation	Humidity	Wind speed	Daylight
January	13.8 °C10.1° to 19.6°	3.2 mm/day	76.6%	4.5 m/s	10 hours
February	13.6 °C9.9° to 19.3°	3.6 mm/day	78.2%	5 m/s	10.8 hours
March	13.7 °C10° to 19.4°	2.5 mm/day	80%	5.3 m/s	11.8 hours
April	13.8 °C10.4° to 20°	0.8 mm/day	79.9%	6 m/s	12.9 hours
May	14.7 °C11.7° to 19.7°	0.4 mm/day	81.1%	6 m/s	13.8 hours
June	16.1 °C12.9° to 20.8°	0.1 mm/day	80.5%	5.6 m/s	14.2 hours
July	17.8 °C14.5° to 22.3°	0.1 mm/day	80.2%	5 m/s	14 hours
August	18.5 °C15.4° to 23.2°	0 mm/day	79%	5.1 m/s	13.2 hours
September	18.6 °C15.3° to 24.6°	0.1 mm/day	78.3%	4.9 m/s	12.2 hours
October	17.8 °C14.4° to 24.8°	0.6 mm/day	76.1%	4.7 m/s	11.1 hours
November	16 °C12.1° to 22.4°	1.1 mm/day	74.2%	4.6 m/s	10.2 hours
December	14 °C10.2° to 19.4°	2.4 mm/day	74.6%	4.7 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: 13.6 °C; September: 18.6 °C; Change from February to September: +5 °C
Precipitation: February: 3.6 mm/day; September: 0.1 mm/day; Change from February to September: -3.5 mm/day
Daylight: February: 10.8 hours; September: 12.2 hours; Change from February to September: +1.4 hours

Calculated climate highlights

Comparative monthly averages for temperature, precipitation, wind, humidity, and daylight duration

Channel Islands National Marine Sanctuary Calculated Monthly Climate Highlights and Extremes

These calculated monthly comparisons identify the warmest, coolest, wettest, and driest periods derived from long term regional climatology records. Each highlighted high and low value reflects a statistical baseline across twelve averaged measurements rather than an observed weather event.

Warmest month: September18.6 °C
Coolest month: February13.6 °C
Wettest month: February3.6 mm/day
Driest month: August0 mm/day
Most humid month: May81.1%
Windiest month: April6 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 normals, annual temperature rhythms, and regional atmospheric patterns across diverse protected landscapes.

Comparing Channel Islands National Marine Sanctuary Climate Profiles With Other Protected Areas

Examine long-term monthly temperature, precipitation, humidity, wind, and daylight records across various protected areas, starting from Channel Islands National Marine Sanctuary. Standardized metrics across different geographic settings reveal distinct atmospheric contrasts and multi-year environmental baselines.