Weather & Climate in Waimea CDP (Kauai County), HI
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Waimea CDP (Kauai County) has a warm climate with an average annual temperature of 75°F (24°C). Winters average 71°F in January while summers reach 78°F in July / relatively mild seasonal variation. The area gets 330 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Air quality is rated Good with a median AQI of 24 / among the cleanest air in the country. The city sits at an elevation of 389 feet.
Temperature
71°F Jan (22°C)78°F Jul (26°C)
Annual Average
74.8°F
39% above US avg
January Average
71°F (22°C)
July Average
78°F (26°C)
Sunny Days
330 days/yr
Geography
Elevation
389 ft (119 m)
Area
0.5 sq mi (1.2 km²)
Population Density
1,119/sq mi
Coordinates
21.9665°N, 159.6694°W
Timezone
Pacific/Honolulu
County
Kauai County County
Nearest Airport
Daniel K Inouye International (HNL) 121 miles away
Precipitation & Snow
Wettest Month (Jan)4.76"
Driest Month (Jun)1.06"
Air Quality
AQI Median
24.0
Rating
Good
Natural Hazard Risk
Overall Risk
Relatively Moderate
Risk Score
84.5 / 100
Social Vulnerability
22.6 / 100
Community Resilience
85.1 / 100
Hazard Breakdown
Tornado
Very Low
Hurricane
Relatively Low
Earthquake
Very Low
Wildfire
Relatively Moderate
Flood
Relatively Moderate
Hail
No Rating
Strong Wind
Very Low
Heat Wave
No Rating
Lightning
Relatively High
Drought
Very Low
Cold Wave
No Rating
Landslide
Relatively Moderate
Coastal Flood
Relatively Low
Tsunami
Relatively Moderate
Volcano
No Rating
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
4 earthquakes (M2.5+) recorded within 150 km since 1990.
Strongest on record: M4.0.
May 29, 2022
70 km WSW of Kekaha, Hawaii
M4.0
75 km
16 km
Jun 15, 2013
122 km WSW of Ko Olina, Hawaii
M3.6
148 km
17 km
Aug 22, 2013
17 km W of M?kaha, Hawaii
M2.6
145 km
35 km
Mar 7, 2012
11 km NW of M?kaha, Hawaii
M2.5
149 km
33 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
4 hurricanes (Category 1+) recorded within 500 km since 1980.
Strongest on record: Category 4.
Year
Name
Category
Max Wind
Closest
2020
Douglas
Category 1
92 mph
82 km
2014
Ana
Category 1
81 mph
143 km
1992
Iniki
Category 4
144 mph
54 km
1982
Iwa
Category 1
92 mph
66 km
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
7 tornadoes (EF0+) recorded within 100 km since 1950.
Strongest on record: EF1.
Date
Rating
Distance
Path
Fatalities
Dec 17, 1967
EF1
4 km
2.5 mi
0
Dec 13, 2008
EF0
3 km
0.9 mi
0
Dec 4, 2005
EF0
99 km
0.1 mi
0
Jan 9, 2005
EF0
2 km
5.0 mi
0
Mar 24, 2002
EF0
42 km
1.0 mi
0
Dec 31, 1971
EF0
4 km
0.1 mi
0
Dec 18, 1971
EF0
4 km
2.5 mi
0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
2 wildfires (100+ acres) recorded within 100 km.
Largest: POKII RIDGE (2,027 acres, 2012).
Year
Name
Acres Burned
Distance
2012
POKII RIDGE
2,027
5 km
2024
KEKAHA FIRE
1,302
5 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
71°F (22°C)
4.8 in
Wettest
February
70°F (21°C)
2.4 in
Coldest
March
72°F (22°C)
2.1 in
April
73°F (23°C)
1.8 in
May
75°F (24°C)
1.8 in
June
77°F (25°C)
1.1 in
Driest
July
78°F (26°C)
2.6 in
August
79°F (26°C)
2.0 in
Warmest
September
78°F (26°C)
1.9 in
October
77°F (25°C)
4.1 in
November
75°F (24°C)
2.7 in
December
72°F (22°C)
3.7 in
Waimea CDP (Kauai County) has a seasonal temperature swing of 9°F / from 70°F in February to 79°F in August. Total annual precipitation is 30.8 inches, with January being the wettest month (4.8") and June the driest (1.1").
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