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Weather & Climate in Kachemak, AK
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Kachemak has a cool climate with an average annual temperature of 40°F (4°C). Winters average 25°F in January while summers reach 56°F in July. The area gets 269 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 23.9 inches (drier than the 38-inch national average). Air quality is rated Good with a median AQI of 21 / among the cleanest air in the country. The city sits at an elevation of 227 feet.
Temperature
25°F Jan (-4°C)
56°F Jul (13°C)
| Annual Average | 40.0°F |
| 26% below US avg | |
| January Average | 25°F (-4°C) |
| July Average | 56°F (13°C) |
| Sunny Days | 269 days/yr |
Geography
| Elevation | 227 ft (69 m) |
| Area | 1.6 sq mi (4.2 km²) |
| Population Density | 500/sq mi |
| Coordinates | 59.6745°N, 151.4363°W |
| Timezone | America/Anchorage |
| County | Kenai Peninsula Borough County |
| Nearest Airport | Ted Stevens Anchorage International (ANC) 115 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 21.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 93.0 / 100 |
| Social Vulnerability | 47.1 / 100 |
| Community Resilience | 6.5 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively High |
| Wildfire | Relatively Moderate |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | No Rating |
| Winter Weather | Relatively High |
| Lightning | Very Low |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Very Low |
| Landslide | Relatively Moderate |
| Coastal Flood | Very Low |
| Tsunami | Relatively Moderate |
| Volcano | Relatively Low |
| Avalanche | Very High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
9,758 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.1.
| Jan 24, 2016 | 47 km ESE of Pedro Bay, Alaska | M7.1 | 107 km | 126 km |
| Jul 29, 2015 | 52 km ENE of Pedro Bay, Alaska | M6.4 | 101 km | 119 km |
| Jul 9, 1998 | 73 km WNW of Ninilchik, Alaska | M6.1 | 110 km | 131 km |
| Nov 20, 1993 | 66 km ENE of Pedro Bay, Alaska | M5.9 | 97 km | 121 km |
| Jan 24, 2009 | Southern Alaska | M5.9 | 86 km | 98 km |
| May 27, 2019 | 61 km SSW of Nanwalek, Alaska | M5.8 | 105 km | 64 km |
| May 10, 2014 | 23 km WNW of Happy Valley, Alaska | M5.8 | 54 km | 89 km |
| May 19, 2000 | 63 km WSW of Nanwalek, Alaska | M5.8 | 106 km | 75 km |
| May 5, 1999 | 30 km ESE of Port Graham, Alaska | M5.7 | 49 km | 73 km |
| Feb 12, 1995 | 67 km SE of Pedro Bay, Alaska | M5.6 | 99 km | 110 km |
| Mar 2, 2017 | 48 km WNW of Nanwalek, Alaska | M5.6 | 69 km | 78 km |
| Feb 10, 2004 | 6 km WNW of Nanwalek, Alaska | M5.5 | 47 km | 66 km |
| Aug 13, 1990 | 13 km NW of Happy Valley, Alaska | M5.5 | 48 km | 72 km |
| Jan 25, 2001 | 39 km WNW of Ninilchik, Alaska | M5.5 | 73 km | 83 km |
| May 12, 1992 | 37 km ESE of Pedro Bay, Alaska | M5.5 | 114 km | 139 km |
| Apr 25, 1994 | 19 km NE of Nikiski, Alaska | M5.4 | 129 km | 49 km |
| Oct 17, 1996 | 70 km WNW of Happy Valley, Alaska | M5.4 | 98 km | 117 km |
| Mar 19, 2023 | 19 km SSW of Anchor Point, Alaska | M5.4 | 27 km | 65 km |
| May 19, 2005 | 54 km W of Happy Valley, Alaska | M5.4 | 80 km | 96 km |
| Jan 2, 2009 | 62 km NNE of Ouzinkie, Alaska | M5.3 | 146 km | 64 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
4 tsunamis recorded within 500 km. Highest wave on record: 60.0 m (197 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1967 | GREWINGK, AK | Meteorological | 60.0 m | — | 20 km |
| 2024 | PEDERSEN LAGOON, AK | Meteorological | 17.0 m | — | 94 km |
| 1883 | COOK INLET, AK | Explosion | 9.1 m | 8 | 115 km |
| 2022 | RESURRECTION BAY, AK | Meteorological | 0.1 m | — | 121 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
3 volcanoes within 200 km. Closest: Iliamna (101 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Iliamna | Stratovolcano | 3,053 m (10,016 ft) | 1876 | 101 km |
| Augustine | Lava dome(s) | 1,252 m (4,108 ft) | 2006 | 118 km |
| Spurr | Stratovolcano | 3,374 m (11,070 ft) | 1992 | 186 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Wildfire History
9 wildfires (100+ acres) recorded within 100 km. Largest: FUNNY RIVER (193,798 acres, 2014).
| Year | Name | Acres Burned | Distance |
| 2014 | FUNNY RIVER | 193,798 | 79 km |
| 2007 | CARIBOU HILLS | 46,686 | 41 km |
| 2005 | FOX CREEK WFU | 25,577 | 59 km |
| 2009 | SHANTA CREEK | 14,474 | 85 km |
| 2005 | KING COUNTY CREEK | 10,124 | 97 km |
| 2005 | TRACY AVE | 5,416 | 9 km |
| 2004 | GLACIER CREEK | 5,230 | 68 km |
| 1994 | WINDY POINT | 2,689 | 61 km |
| 2007 | SWAN LAKE | 1,986 | 97 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 25°F (-4°C) | 2.9 in | |
| February | 23°F (-5°C) | 2.4 in | |
| March | 27°F (-3°C) | 2.3 in | |
| April | 34°F (1°C) | 1.7 in | |
| May | 43°F (6°C) | 1.4 in | Driest |
| June | 50°F (10°C) | 1.4 in | |
| July | 56°F (13°C) | 1.9 in | Warmest |
| August | 53°F (12°C) | 2.8 in | |
| September | 46°F (8°C) | 4.1 in | Wettest |
| October | 36°F (2°C) | 3.6 in | |
| November | 27°F (-3°C) | 3.1 in | |
| December | 23°F (-5°C) | 3.4 in | Coldest |
Kachemak has a seasonal temperature swing of 34°F / from 23°F in December to 56°F in July. Total annual precipitation is 30.9 inches, with September being the wettest month (4.1") and May the driest (1.4").