Current Sea Water Temperature:
+44.4°F
| Maximum Sea Water Temperature in December: | 45.2°F |
| Minimum Sea Water Temperature in December: | 41.2°F |
| Average water temperature in December: | 43.3°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| December 04 | 44.4°F | November 29 | 44.6°F |
| December 03 | 44.4°F | November 28 | 44.8°F |
| December 02 | 44.6°F | November 27 | 45.0°F |
| December 01 | 44.6°F | November 26 | 45.4°F |
| November 30 | 44.6°F | November 25 | 45.6°F |
When is the Warmest Sea for Ketchikan?
According to our data for the last three years for Ketchikan the highest average sea water temperature was in August, July and September.
Average Water Temperature by Month, °F
Sea Water Temperature in August
The average sea surface temperature in August 2025 for Ketchikan was 60.6°F. The maximum and minimum values were 58.6°F and 62.8°F respectively.
Sea Water Temperature in July
The average sea surface temperature in July 2025 for Ketchikan was 58.3°F. The maximum and minimum values were 56.0°F and 62.6°F respectively.
Sea Water Temperature in September
The average sea surface temperature in September 2025 for Ketchikan was 57.8°F. The maximum and minimum values were 53.2°F and 64.6°F respectively.
USA Resorts:
NAME
F°
| Chicago |  |
0 |
| Hawaii |  |
+78 |
| Honolulu | |
+78 |
| Houston | |
+46 |
| Las Vegas |  |
+44 |
| Los Angeles | |
+56 |
| Maui | |
+72 |
| Miami | |
+72 |
| Miami Beach | |
+80 |
| New York | |
+20 |
| San Diego | |
+58 |
| San Francisco | |
+48 |
| Sarasota | |
+64 |
| Tampa | |
+64 |
| Washington | |
+28 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Ketchikan
Local time: 20:59
04 dec, thursday
| 2100 |  |
40°F | W 4 mph |
05 dec, friday
| 0000 | |
40°F | W 4 mph |
| 0300 | |
40°F | W 4 mph |
| 0600 | |
38°F | W 5 mph |
| 0900 | |
38°F | S 6 mph |
| 1200 |  |
40°F | S 7 mph |
| 1500 |  |
40°F | S 6 mph |
| 1800 | |
34°F | S 4 mph |