Today's Ala Moana sea temperature is 20.4 °C
(3.7° warmer than normal for this time of year)
| Mean: | 16.7 °C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Range: | 14.9 °C to 20.2 °C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statistics for 20 Sep (1981–2005) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Today, many surfers would wear a shorty .
The water temperature (20 °C) at Ala Moana is warm and the air temperature should feel similar (windchill forecast 19 °C). If the sun does come out as forecast, it should feel warm enough to surf in a shorty or a summer wetsuit.
 Map of current Peru Surface Water Temperatures (based on measurements from oceanographic satellites) |  Map of current Peru Sea Water Temperature Anomalies (compared with long term averages at this time of year) |
click thumbnails to expand
Below is a graph of Historical Sea Surface Temperature for Ala Moana. This has been derived from analysis of two decades of oceanographic satellite measurements of nearby open water. We have calculated the average water temperature variation around the year as well as the extremes that have been observed on each date.
All of the graphs for the surf breaks presented on Surf-Forecast.com are on the same scale to enable comparison between locations around the world.
Ala Moana sea water temperatures peak in the range 21 to 26°C (70 to 79°F) on around the 17th of February and are at their coldest on about the 7th of August, in the range 15 to 21°C (59 to 70°F). Ala Moana sea water temperatures are always warm reach their maximum in the middle of February. You'll need a 2mm neoprene top or a shorty at dawn/dusk or if it's windy. The coldest seasonal sea water temperatures at Ala Moana in the first part of August lend themselves to a 4/3mm wetsuit or a 3/2mm suit and 3mm neoprene boots.
Actual sea surface water temperatures close to shore at Ala Moana can vary by several degrees compared with these open water averages. This is especially true after heavy rain, close to river mouths or after long periods of strong offshore winds. Offshore winds cause colder deep water to replace surface water that has been warmed by the sun. Air temperature, wind-chill and sunshine should also be considered before deciding on the kind of wetsuit needed to stay warm when surfing at Ala Moana. Refer to our detailed weather forecasts for this information.
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