Portarlington Sea Temperature in January

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

Average water temperature in Portarlington for January

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

19.13° C

(66.44° F)

highest: 22.55° C (72.59° F)
lowest: 16.82° C (62.28° F)

At this temperature, water will feel cold compared to a swimming pool, but with a bit of experience and practice most people will find the water relatively comfortable to swim in.

Water temperature range by day in January in Portarlington

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

Water temperatures for January in Portarlington in recent years

Day	2024	2023	2022	2021
1	17.8° C	18.84° C	19.55° C	17.54° C
2	17.98° C	18.73° C	19.28° C	17.77° C
3	18.29° C	18.46° C	19.04° C	18.02° C
4	18.33° C	17.97° C	18.92° C	18.02° C
5	18.43° C	17.89° C	18.79° C	17.84° C
6	18.55° C	18.06° C	19.05° C	17.85° C
7	18.61° C	18.43° C	19.38° C	18.04° C
8	18.69° C	18.7° C	18.6° C	18.5° C
9	18.79° C	18.47° C	18.82° C	18.88° C
10	18.87° C	18.75° C	18.98° C	19.12° C
11	19.2° C	18.92° C	19.01° C	18.81° C
12	19.42° C	19.01° C	19.08° C	18.49° C
13	19.26° C	19.58° C	19.26° C	18.54° C
14	19.11° C	20.11° C	19.3° C	18.44° C
15	19.33° C	19.66° C	19.33° C	18.36° C
16	19.71° C	19.85° C	19.59° C	17.98° C
17	19.52° C	19.87° C	19.38° C	17.63° C
18	19.13° C	19.2° C	19.27° C	17.56° C
19	18.73° C	18.87° C	19.31° C	17.64° C
20	18.97° C	18.88° C	19.39° C	17.95° C
21	18.82° C	18.84° C	19.59° C	18.34° C
22	18.88° C	19.07° C	19.86° C	18.64° C
23	19.18° C	19.5° C	20.18° C	19.06° C
24	19.13° C	19.64° C	20.56° C	19.38° C
25	18.81° C	19.68° C	20.77° C	19.63° C
26	18.72° C	19.68° C	21.03° C	18.92° C
27	18.76° C	19.89° C	21.09° C	18.92° C
28	19.09° C	19.8° C	20.4° C	18.75° C
29	19.29° C	19.29° C	19.84° C	18.63° C
30	19.43° C	19.33° C	20.26° C	18.66° C
31	19.47° C	19.44° C	20.62° C	18.88° C