Cool
Average highs are around 13°C, so pack for cooler days.
Weather Guide
Katmai National Park, United States Average Monthly Weather
Weather score25Poor annual avg
Best months: May, April, June
Across the year, average daytime temperatures are around 3°C, sunshine averages 5.5h per day, and rainfall totals about 906mm. Sea temperatures average 7°C across the year.
Annual weather
Annual averages
Temp
3°C
Rain
906mm
Annual total
Sun
5.5h
Sea
7°C
Weather score
25
Poor avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 108mm, so some wet days are possible.
Some sun
Sunshine averages 5.9h per day, enough for a balanced month.
Cool sea
Sea temperatures average 12°C, so the water can feel cool.
Map
Weather map
Compare Katmai National Park, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August13°C average high
August is one of Katmai National Park's hottest months, so shade and slower afternoons matter.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
August108mm average rain
August is one of Katmai National Park's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to July and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August5.9 hours average sun
August sits close to Katmai National Park's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsApril to July
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
August12°C average sea
August is one of Katmai National Park's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJuly to September
Sea temperatures are usually near 12°C in this stretch, so swimming comfort is at its strongest.
Weather score
August23 weather score
August scores below Katmai National Park's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsFebruary to July
These months have the strongest weather score in the monthly averages.