Ketchikan Sea Temperature in May

Looking to find out what the average sea water temperature in Ketchikan is for May? Find out what the lowest, highest, and average water temperatures are for Ketchikan over the past 10 years.

Average water temperature in Ketchikan for May

The average, high, and low temperatures below should help you if you can swim in the water in Ketchikan in May.

9.61° C

(49.31° F)

highest: 13.85° C (56.93° F)
lowest: 6.5° C (43.7° F)

This water is very cold and can cause pain. We don't recommend you swim in this temperature for anything other than very short swims of 5 to 10 minutes unless you are a very experienced cold water swimmer.

Water temperature range by day in May in Ketchikan

The chart below shows the range of low and high temperatures by day for the month of May in Ketchikan.

Water temperatures for May in Ketchikan in recent years

Day	2024	2023	2022	2021
1	8.35° C	7.75° C	8.27° C	8.12° C
2	8.89° C	7.73° C	8.03° C	8.1° C
3	0° C	7.81° C	7.87° C	8.13° C
4	0° C	8.37° C	7.91° C	8.16° C
5	0° C	8.53° C	8.09° C	8.2° C
6	0° C	9.08° C	8.3° C	8.15° C
7	0° C	9.27° C	8.45° C	8.07° C
8	0° C	9.29° C	8.58° C	8.05° C
9	0° C	9.36° C	8.96° C	8.09° C
10	0° C	9.45° C	9.09° C	8.06° C
11	0° C	9.6° C	9.06° C	8.1° C
12	0° C	9.27° C	8.68° C	8.31° C
13	0° C	9.12° C	8.64° C	8.38° C
14	0° C	9.53° C	8.65° C	8.44° C
15	0° C	10.31° C	8.66° C	8.36° C
16	0° C	10.86° C	8.55° C	8.46° C
17	0° C	11.47° C	8.43° C	8.89° C
18	0° C	11.77° C	8.4° C	8.91° C
19	0° C	11.59° C	8.47° C	9.09° C
20	0° C	11.47° C	8.83° C	9.38° C
21	0° C	11.23° C	9.34° C	9.41° C
22	0° C	11.04° C	9.66° C	9.64° C
23	0° C	11.14° C	9.61° C	9.67° C
24	0° C	11.26° C	9.8° C	9.66° C
25	0° C	11.57° C	10° C	9.64° C
26	0° C	11.82° C	9.65° C	9.73° C
27	0° C	11.99° C	9.16° C	9.72° C
28	0° C	11.64° C	10.4° C	9.54° C
29	0° C	11.59° C	10.85° C	9.65° C
30	0° C	11.57° C	11° C	9.74° C
31	0° C	11.48° C	11.23° C	9.79° C

Water temperature in May for locations near Ketchikan

Metlakatla

United States, North America

15.01 miles away

Data source and citation

Raw data for the calculations made to find the sea surface temperature in Ketchikan comes from the National Oceanic and Atmospheric Administration (NOAA) and their 1/4° daily Optimum Interpolation Sea Surface Temperature.

The water temperature data is constructed by combining observations from different platforms (satellites, ships, buoys, and Argo floats) on a regular global grid. A spatially complete sea surface temperature map is then built by interpolating to fill in gaps in the data.

If you'd like to use any of the information above in the format it is presented, please use the citation tool below.

<a href="http://seatemperatures.net/north-america/united-states/ketchikan-may-temperature/">Ketchikan Sea Temperature in May</a>
"Ketchikan Sea Temperature in May". SeaTemperatures.net. Accessed on May 4, 2024. http://seatemperatures.net/north-america/united-states/ketchikan-may-temperature/.
"Ketchikan Sea Temperature in May". SeaTemperatures.net, http://seatemperatures.net/north-america/united-states/ketchikan-may-temperature/. Accessed 4 May, 2024
Ketchikan Sea Temperature in May. SeaTemperatures.net. Retrieved from http://seatemperatures.net/north-america/united-states/ketchikan-may-temperature/.