HawaiiGaga Travel Research

Hawaii Weather, Rainfall & Microclimates

Choose the right coast - not merely the right island. Compare monthly rainfall, temperatures and ocean conditions across Hawaii's most popular vacation areas.

Explore the weather charts Choose an island

One island can contain several different vacations

Hawaii's weather changes dramatically over short distances. Hilo is among the wettest American cities, while dry leeward resort areas can sit surprisingly close to lush rainforests. The charts below use 1990 - 2020 climate averages to reveal those local differences month by month.

Warmest periodAugust and September are generally the warmest months.
Drier seasonMay through October usually offers the most dependable weather.
Winter strategyChoose a leeward, drier coast when sunshine is a priority.
Ocean temperatureApproximately 74°F in winter to 81°F in summer.
Start with your island

Compare the places you are considering

Jump directly to an island, then select a town to compare monthly rainfall and average daytime highs.

KauaiNorth Shore rainforest to sunny Poipu and Kekaha MauiKapalua, Lahaina, Kahului, Wailea and Hana Big IslandContrasting Kona, Kohala, Hilo and Volcano climates OahuHonolulu, Kailua, Turtle Bay and the North Shore

Temperatures

Sea-level temperatures are remarkably consistent. Average daytime highs are near 85°F in summer and 78°F in winter, usually falling 10–15 degrees overnight. Elevation can make mountain areas much cooler.

Two broad seasons

Hawaii generally describes May–October as summer and November–April as winter. Winter brings more variable weather, but even wetter regions can enjoy long spells of sunshine.

Ocean conditions

North-facing shores receive powerful winter swells, while south-facing shores become more active in summer. Reefs, island shelter and trade winds create important local differences.

How to use the charts

Rainfall averages describe climate, not a daily forecast. Use them to compare areas and seasons - especially for winter trips - rather than to predict the weather on a particular day.

Average Honolulu Ocean Temperature
Temp.JanFebMarAprMayJunJulAugSepOctNovDec
°F767676767879808081817977
°C24.424.424.424.425.626.126.726.727.227.226.125.0

Warm water throughout the year

Ocean temperatures usually range from roughly 74°F in winter to 81°F in summer. The seasonal change is noticeable, but swimming remains comfortable for most visitors year-round. Shallow water is warmer.

Historic climate explorer

Rainfall and temperature by vacation area

Select an island and town. Hover over chart bars on desktop or tap them on mobile to see the exact value.

Kauai Rainfall and Temperature Charts

Kauai Rainfall Map
Princeville
Lihue
Poipu
Kekaha

Kauai Rainfall Map

Kauai Rainfall Map
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Kauai Rainfall Map

Princeville

Monthly Rainfall
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8" 7" 6" 5" 4" 3" 2" 1" 0" J F M A M J J A S O N D Annual Total: 73.57 inches | Monthly Average: 6.13 inches
Average Maximum Temperature
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90°F 32.2°C 85°F 29.4°C 80°F 26.7°C 75°F 23.9°C 70°F 21.1°C J F M A M J J A S O N D Average annual temperature: 81.2°F (27.3°C)

Lihue

Monthly Rainfall
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6" 5" 4" 3" 2" 1" 0" J F M A M J J A S O N D Annual Total: 36.12 inches | Monthly Average: 3.01 inches
Average Maximum Temperature
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90°F 32.2°C 85°F 29.4°C 80°F 26.7°C 75°F 23.9°C 70°F 21.1°C J F M A M J J A S O N D Average annual temperature: 82.1°F (27.8°C)

Poipu

Monthly Rainfall
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6" 5" 4" 3" 2" 1" 0" J F M A M J J A S O N D Annual Total: 37.27 inches | Monthly Average: 3.11 inches
Average Maximum Temperature
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90°F 32.2°C 85°F 29.4°C 80°F 26.7°C 75°F 23.9°C 70°F 21.1°C J F M A M J J A S O N D Average annual temperature: 81.6°F (27.6°C)

Kekaha

Monthly Rainfall
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6" 5" 4" 3" 2" 1" 0" J F M A M J J A S O N D Annual Total: 17.8 inches | Monthly Average: 1.48 inches
Average Maximum Temperature
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90°F 32.2°C 85°F 29.4°C 80°F 26.7°C 75°F 23.9°C 70°F 21.1°C J F M A M J J A S O N D Average annual temperature: 82.8°F (28.2°C)

Maui Rainfall and Temperature Charts

Maui Rainfall Map
Kapalua
Lahaina
Kahului
Wailea
Hana

Maui Rainfall Map

Maui Rainfall Map
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Maui Rainfall Map

Kapalua

Monthly Rainfall
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6" 5" 4" 3" 2" 1" 0" J F M A M J J A S O N D Annual Total: 27.77 inches | Monthly Average: 2.31 inches
Average Maximum Temperature
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90°F 32.2°C 85°F 29.4°C 80°F 26.7°C 75°F 23.9°C 70°F 21.1°C J F M A M J J A S O N D Average annual temperature: 82.7°F (28.2°C)

Lahaina

Monthly Rainfall
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6" 5" 4" 3" 2" 1" 0" J F M A M J J A S O N D Annual Total: 13.27 inches | Monthly Average: 1.11 inches
Average Maximum Temperature
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90°F 32.2°C 85°F 29.4°C 80°F 26.7°C 75°F 23.9°C 70°F 21.1°C J F M A M J J A S O N D Average annual temperature: 83.9°F (28.8°C)

Kahului

Monthly Rainfall
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6" 5" 4" 3" 2" 1" 0" J F M A M J J A S O N D Annual Total: 16.21 inches | Monthly Average: 1.35 inches
Average Maximum Temperature
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90°F 32.2°C 85°F 29.4°C 80°F 26.7°C 75°F 23.9°C 70°F 21.1°C J F M A M J J A S O N D Average annual temperature: 86.0°F (30.0°C)

Wailea

Monthly Rainfall
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6" 5" 4" 3" 2" 1" 0" J F M A M J J A S O N D Annual Total: 15.70 inches | Monthly Average: 1.31 inches
Average Maximum Temperature
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90°F 32.2°C 85°F 29.4°C 80°F 26.7°C 75°F 23.9°C 70°F 21.1°C J F M A M J J A S O N D Average annual temperature: 83.9°F (28.8°C)

Hana

Monthly Rainfall
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10" 8" 6" 4" 2" 0" J F M A M J J A S O N D Annual Total: 72.19 inches | Monthly Average: 6.02 inches
Average Maximum Temperature
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90°F 32.2°C 85°F 29.4°C 80°F 26.7°C 75°F 23.9°C 70°F 21.1°C J F M A M J J A S O N D Average annual temperature: 80.0°F (26.7°C)

Big Island Rainfall and Temperature Charts

Big Island Rainfall Map
Waikoloa Beach Resort
Kona
Hilo
Volcanoes N.P.

Big Island Rainfall Map

Big Island Rainfall Map
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Big Island Rainfall Map

Waikoloa Beach Resort

Monthly Rainfall
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6" 5" 4" 3" 2" 1" 0" J F M A M J J A S O N D Annual Total: 8.54 inches | Monthly Average: 0.71 inches
Average Maximum Temperature
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90°F 32.2°C 85°F 29.4°C 80°F 26.7°C 75°F 23.9°C 70°F 21.1°C J F M A M J J A S O N D Average annual temperature: 84.7°F (29.3°C)
Temperature data from Kona airport. Kahala region temperatures are slightly higher.

Kona

Monthly Rainfall
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6" 5" 4" 3" 2" 1" 0" J F M A M J J A S O N D Annual Total: 12.0 inches | Monthly Average: 1.0 inches
Average Maximum Temperature
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90°F 32.2°C 85°F 29.4°C 80°F 26.7°C 75°F 23.9°C 70°F 21.1°C J F M A M J J A S O N D Average annual temperature: 84.7°F (29.3°C)

Hilo

Monthly Rainfall
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15" 13" 11" 9" 7" 5" 0" J F M A M J J A S O N D Annual Total: 119.33 inches | Monthly Average: 9.94 inches
Average Maximum Temperature
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90°F 32.2°C 85°F 29.4°C 80°F 26.7°C 75°F 23.9°C 70°F 21.1°C J F M A M J J A S O N D Average annual temperature: 80.6°F (27.0°C)

Volcanoes National Park

Monthly Rainfall
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15" 13" 11" 9" 7" 5" 0" J F M A M J J A S O N D Annual Total: 94.84 inches | Monthly Average: 7.90 inches
Average Maximum Temperature
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80°F 26.7°C 75°F 23.9°C 70°F 21.1°C 65°F 18.3°C 60°F 15.6°C J F M A M J J A S O N D Average annual temperature: 70.4°F (21.3°C)

Oahu Rainfall and Temperature Charts

Oahu Rainfall Map
Kaneohe
Turtle Bay
Kapolei
Honolulu
Haleiwa

Oahu Rainfall Map

Oahu Rainfall Map
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Oahu Rainfall Map

Kaneohe

Monthly Rainfall
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6" 5" 4" 3" 2" 1" 0" J F M A M J J A S O N D Annual Total: 27.82 inches | Monthly Average: 2.32 inches
Average Maximum Temperature
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90°F 32.2°C 85°F 29.4°C 80°F 26.7°C 75°F 23.9°C 70°F 21.1°C J F M A M J J A S O N D Average annual temperature: 81.1°F (27.3°C)

Turtle Bay

Monthly Rainfall
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6" 5" 4" 3" 2" 1" 0" J F M A M J J A S O N D Annual Total: 32.61 inches | Monthly Average: 2.72 inches
Average Maximum Temperature
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90°F 32.2°C 85°F 29.4°C 80°F 26.7°C 75°F 23.9°C 70°F 21.1°C J F M A M J J A S O N D Average annual temperature: 79.9°F (26.6°C)

Kapolei

Monthly Rainfall
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6" 5" 4" 3" 2" 1" 0" J F M A M J J A S O N D Annual Total: 13.82 inches | Monthly Average: 1.15 inches
Average Maximum Temperature
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90°F 32.2°C 85°F 29.4°C 80°F 26.7°C 75°F 23.9°C 70°F 21.1°C J F M A M J J A S O N D Average annual temperature: 84.9°F (29.4°C)

Honolulu

Monthly Rainfall
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6" 5" 4" 3" 2" 1" 0" J F M A M J J A S O N D Annual Total: 16.41 inches | Monthly Average: 1.37 inches
Average Maximum Temperature
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90°F 32.2°C 85°F 29.4°C 80°F 26.7°C 75°F 23.9°C 70°F 21.1°C J F M A M J J A S O N D Average annual temperature: 84.5°F (29.2°C)

Haleiwa

Monthly Rainfall
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6" 5" 4" 3" 2" 1" 0" J F M A M J J A S O N D Annual Total: 44.00 inches | Monthly Average: 3.67 inches
Average Maximum Temperature
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90°F 32.2°C 85°F 29.4°C 80°F 26.7°C 75°F 23.9°C 70°F 21.1°C J F M A M J J A S O N D Average annual temperature: 79.9°F (26.6°C)
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