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Live readings · updated daily

Water temperature in Hawaii

The latest readings from USGS real-time water sensors across Hawaii, warmest first. Snapshot updated August 21, 2026.

Warmest sensor reading right now

71°F22°C

USGS gauge Kahakuloa Stream near Honokohau, Maui, HI · as of 9 hrs ago

All reporting stations (warmest 50 of 100)

StationWater tempStreamflowGage heightObserved
Kahakuloa Stream near Honokohau, Maui, HIUSGS gauge71°F22°C11 ft³/s0.65 ft9 hrs ago
Alakahi Stream near Kamuela, HIUSGS gauge5 ft³/s2.07 ft9 hrs ago
Awini Puali Gulch US of Kohala Ditch, HIUSGS gauge5 ft³/s29.90 ft8 hrs ago
EB of NF Wailua River nr Lihue, Kauai, HIUSGS gauge41 ft³/s0.17 ft9 hrs ago
EF Kawela Gulch nr Kamalo, Molokai, HIUSGS gauge0 ft³/s2.61 ft8 hrs ago
Haipuaena Stream abv Spreckels Ditch, Maui, HIUSGS gauge7 ft³/s1.94 ft8 hrs ago
Hakalau Stream nr alt 1300 ft, HIUSGS gauge8 ft³/s17.19 ft8 hrs ago
Halaulani Str at alt 400 ft nr Kilauea, Kauai, HIUSGS gauge5 ft³/s0.93 ft9 hrs ago
Halawa Stream near Halawa, Molokai, HIUSGS gauge16 ft³/s2.22 ft9 hrs ago
Hanakapiai Stream abv Hanakapiai Falls, Kauai, HIUSGS gauge1.40 ft8 hrs ago
Hanalei Riv at Hwy 56 Bridge nr Hanalei, Kauai, HIUSGS gauge6.83 ft9 hrs ago
Hanalei River nr Hanalei, Kauai, HIUSGS gauge158 ft³/s-0.11 ft9 hrs ago
Hanapepe Riv blw Manuahi Str nr Eleele, Kauai, HIUSGS gauge1.67 ft8 hrs ago
Hanawi Stream near Nahiku, Maui, HIUSGS gauge9 ft³/s0.70 ft9 hrs ago
Heeia Stream at Haiku Plantations Dr., Oahu, HIUSGS gauge19 ft³/s2.70 ft8 hrs ago
Heeia Stream at Haiku Valley nr Kaneohe, Oahu, HIUSGS gauge2 ft³/s1.20 ft9 hrs ago
Helemano 6 Reservoir, Oahu, HIUSGS gauge22.14 ft9 hrs ago
Honokahua Stream at Honoapiilani Highway, Maui, HIUSGS gauge-1.44 ft9 hrs ago
Honokohau Stream near Honokohau, Maui, HIUSGS gauge71 ft³/s2.03 ft8 hrs ago
Honolii Stream nr Papaikou, HIUSGS gauge54 ft³/s2.86 ft9 hrs ago
Honomanu Stream near Keanae, Maui, HIUSGS gauge6 ft³/s3.60 ft9 hrs ago
Honopou Stream near Huelo, Maui, HIUSGS gauge16 ft³/s1.37 ft9 hrs ago
Honouliuli Str at H-1 Freeway nr Waipahu, Oahu, HIUSGS gauge6 ft³/s5.32 ft9 hrs ago
Ka Loko Reservoir near Kilauea, Kauai, HIUSGS gauge21.08 ft9 hrs ago
Kaelepulu Canal near mouth, Oahu, HIUSGS gauge0.97 ft8 hrs ago
Kahaluu Str nr Ahuimanu, Oahu, HIUSGS gauge4 ft³/s1.34 ft9 hrs ago
Kahana Str at alt 30 ft nr Kahana, Oahu, HIUSGS gauge45 ft³/s4.82 ft8 hrs ago
Kahoma Stream at Lahaina, Maui, HIUSGS gauge3 ft³/s0.40 ft8 hrs ago
Kalihi Str nr Honolulu, Oahu, HIUSGS gauge9 ft³/s2.48 ft9 hrs ago
Kamalo Gulch near Kamalo, Molokai, HIUSGS gauge6.09 ft8 hrs ago
Kamananui Str at Maunawai, Oahu, HIUSGS gauge31 ft³/s2.69 ft9 hrs ago
Kamananui Str at Pupukea Mil Rd, Oahu, HIUSGS gauge18 ft³/s1.40 ft9 hrs ago
Kaneohe Str blw Kamehameha Hwy, Oahu, HIUSGS gauge22 ft³/s15.96 ft9 hrs ago
Kauaula Stream US of ditch diversion, Maui, HIUSGS gauge10 ft³/s4.58 ft8 hrs ago
Kaukonahua Str at Waialua, Oahu, HIUSGS gauge119 ft³/s17.49 ft8 hrs ago
Kaukonahua Stream blw Wahiawa Reservoir, Oahu, HIUSGS gauge122 ft³/s6.78 ft8 hrs ago
Kaunakakai Gulch at altitude 75 feet, Molokai, HIUSGS gauge0 ft³/s4.90 ft9 hrs ago
Kaupuni Str at alt 374 ft nr Waianae, Oahu, HIUSGS gauge2 ft³/s2.97 ft18 hrs ago
Kawa Str at Kaneohe, Oahu, HIUSGS gauge2 ft³/s3.59 ft8 hrs ago
Kawaikoi Stream nr Waimea, Kauai, HIUSGS gauge17 ft³/s2.46 ft9 hrs ago
Kawainui Marsh nr levee sta 15+00, Oahu, HIUSGS gauge5.98 ft9 hrs ago
Kawainui Stream nr Kamuela, HIUSGS gauge6 ft³/s1.45 ft8 hrs ago
Kawela Gulch near Moku, Molokai, HIUSGS gauge1 ft³/s7.82 ft9 hrs ago
Kemoo 5 Reservoir, Oahu, HIUSGS gauge12.58 ft11 hrs ago
Kohakohau Stream above intake, nr Kamuela, HIUSGS gauge6 ft³/s1.99 ft9 hrs ago
Koolau Reservoir near Wahiawa, Oahu, HIUSGS gauge8.60 ft8 hrs ago
Ku Tree Reservoir near Wahiawa, Oahu, HIUSGS gauge17.19 ft8 hrs ago
Left Branch Opaekaa Str nr Kapaa, Kauai, HIUSGS gauge2 ft³/s0.89 ft8 hrs ago
Makaha Str nr Makaha, Oahu, HIUSGS gauge1 ft³/s1.45 ft9 hrs ago
Makawao Str nr Kailua, Oahu, HIUSGS gauge5 ft³/s6.96 ft9 hrs ago

Station links open the official monitoring page with charts and history.

About these readings

Readings come from USGS real-time monitoring stations — 1 sensor is currently reporting a water temperature in Hawaii. Each figure is a point measurement at one sensor, usually on a river or stream — it doesn’t describe a whole lake or shoreline, and coverage varies across the state. Data is provisional and can be revised by the USGS.

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Conditions are for general information only and can change quickly. Always judge the water in person and follow posted advisories and local guidance before swimming or paddling.