Poipu water temp

This data the coastal Poipu ocean water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.

Current ocean temperature in Poipu

Water temperature in Poipu today is 82.2°F. Based on our historical data over a period of ten years, the warmest water in this day in the Pacific Ocean near Poipu was recorded in 2015 and was 82.6°F, and the coldest was recorded in 2012 at 78.8°F. Sea water temperature in Poipu is expected to drop to 80.6°F in the next 10 days. September average water temperature in Poipu is 80.8°F, the minimum temperature is 77.7°F, and the maximum is 84°F.

The swimming season in Poipu lasts from January to December, twelve months per year! During those months, Poipu water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Poipu in winter reaches 76.5°F, in spring 76.5°F, in summer the average temperature rises to 79.5°F, and in autumn it is 80.2°F.

Poipu water temperature now

The ocean salinity in Poipu is 34.91‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Poipu for today

Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Poipu. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Poipu. Data in table shown for September 17, 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Poipu

Poipu weather forecast

Current temperature and weather

Data in a table show Poipu temperature today (September 17, 2025). For more information and forecast for a few days, go to the weather forecast Poipu.

0-3 h	3-6 h	6-9 h	9-12 h
73.4°F	73.2°F	75°F	78.6°F

12-15 h	15-18 h	18-21 h	21-24 h
82°F	81.5°F	75.9°F	73.9°F

Poipu water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in Poipu. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Poipu on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve

Chart monthly average water temperature in Poipu

The nearest beaches and cities from Poipu with the water temperature today, as well as the air temperature and the state of the weather during the day and the average wave height for today

	Water	Weather		Wave
Lawai Beach	82.2°F	80.6°F		4' 10"
Lihue	82.4°F	80.6°F		4' 10"
Salt Pond Beach	82.2°F	80.6°F		4' 6"
Port Allen	82.2°F	80.6°F		4' 6"
Lydgate Beach	82.2°F	80.6°F		4' 11"
Wailua	82.2°F	80.6°F		4' 10"
Kapaa	82.2°F	80.6°F		4' 10"
Anahola	82°F	80.6°F		4' 11"
Anini Beach	81.9°F	80.6°F		4' 1"
Secret Beach	81.9°F	80.6°F		4' 1"

If you have interesting photos of this place, you can upload them here. Photos will be available to all users after verification by the moderator.

Poipu Beach, Koloa Landing, Poipu Beach Park

Get widget or API for your website

Our report for Poipu is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.