Holyhead Sea Temperature in September

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

Average water temperature in Holyhead for September

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

15.08° C

(59.15° F)

  • highest: 17.15° C (62.87° F)
  • lowest: 13.6° C (56.48° 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 September in Holyhead

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

Water temperatures for September in Holyhead in recent years

Day 2024 2023 2022 2021
1 0° C 15.99° C 15.89° C 15.34° C
2 0° C 16.13° C 15.8° C 15.37° C
3 0° C 16.13° C 15.7° C 15.46° C
4 0° C 16.44° C 15.76° C 15.47° C
5 0° C 16.57° C 15.7° C 15.47° C
6 0° C 16.65° C 15.69° C 16.21° C
7 0° C 16.66° C 15.66° C 16.07° C
8 0° C 16.85° C 15.72° C 16.03° C
9 0° C 17.15° C 15.78° C 16° C
10 0° C 16.95° C 15.78° C 16.34° C
11 0° C 16.84° C 15.62° C 16.13° C
12 0° C 16.34° C 15.81° C 15.89° C
13 0° C 16.23° C 15.8° C 15.88° C
14 0° C 16.08° C 15.67° C 15.89° C
15 0° C 16.03° C 15.7° C 15.89° C
16 0° C 16.12° C 15.66° C 15.82° C
17 0° C 15.95° C 15.69° C 15.77° C
18 0° C 15.96° C 15.77° C 15.88° C
19 0° C 15.97° C 15.88° C 15.9° C
20 0° C 15.93° C 15.84° C 15.87° C
21 0° C 15.9° C 15.66° C 15.79° C
22 0° C 15.85° C 15.58° C 15.75° C
23 0° C 15.89° C 15.6° C 15.75° C
24 0° C 15.86° C 15.6° C 15.6° C
25 0° C 15.84° C 15.58° C 15.63° C
26 0° C 15.86° C 15.46° C 15.63° C
27 0° C 15.85° C 15.34° C 15.51° C
28 0° C 16.07° C 15.29° C 15.34° C
29 0° C 16.11° C 15.23° C 15.32° C
30 0° C 16.03° C 15.23° C 15.33° C

Water temperature in September for locations near Holyhead

Rhosneigr

United Kingdom, Europe

7.27 miles away

Cemlyn

United Kingdom, Europe

8.46 miles away

Anglesey

United Kingdom, Europe

8.96 miles away

Cwyfan

United Kingdom, Europe

10.36 miles away

Amlwch

United Kingdom, Europe

13.76 miles away

Moelfre

United Kingdom, Europe

16.59 miles away

Data source and citation

Raw data for the calculations made to find the sea surface temperature in Holyhead 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.

  • "Holyhead Sea Temperature in September". SeaTemperatures.net. Accessed on April 28, 2024. http://seatemperatures.net/europe/united-kingdom/holyhead-september-temperature/.

  • "Holyhead Sea Temperature in September". SeaTemperatures.net, http://seatemperatures.net/europe/united-kingdom/holyhead-september-temperature/. Accessed 28 April, 2024

  • Holyhead Sea Temperature in September. SeaTemperatures.net. Retrieved from http://seatemperatures.net/europe/united-kingdom/holyhead-september-temperature/.