Water temperature in Fernandina Island in October

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Is it warm enough to swim in Fernandina Island in October? Average water temperature in Fernandina Island in October is 20.6°C and therefore suitable for comfortable swimming. The warmest sea in Fernandina Island in October is 24.6°C, and the coldest is 16.5°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Fernandina Island

Changes water temperature in Fernandina Island in October 2025, 2024

To get an accurate forecast for the water temperature in Fernandina Island for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Fernandina Island, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of October.

Sea temperature

Sea state

Weather forecast

You can choose any other years:

Day	2025	2024	Min	Max
1 October	20.1°C	20.7°C	17.1°C	21.2°C
2 October	19.9°C	20.4°C	19°C	22.8°C
3 October	20.1°C	20°C	16.5°C	23.1°C
4 October	19.9°C	20.8°C	16.9°C	22.9°C
5 October	20.3°C	20.9°C	18.9°C	23.1°C
6 October	20.3°C	21.5°C	18.4°C	24.2°C
7 October	20.9°C	20.6°C	18.1°C	23.5°C
8 October	20.9°C	21.2°C	17.8°C	23.7°C
9 October	21.2°C	21.8°C	17.7°C	23.7°C
10 October	20.1°C	21.5°C	18.3°C	23.3°C
11 October	19.8°C	21.5°C	18°C	23.5°C
12 October	20.3°C	21.5°C	18.3°C	23.4°C
13 October	19.6°C	21.6°C	19°C	23.4°C
14 October	18°C	21.9°C	18°C	24°C
15 October	16.6°C	21.8°C	16.6°C	23.7°C

Day	2025	2024	Min	Max
16 October	17.5°C	21.4°C	17.2°C	24.5°C
17 October	18.4°C	21.2°C	17.9°C	24.6°C
18 October	20.7°C	21.6°C	17.7°C	23.9°C
19 October	20.9°C	20.8°C	17.1°C	24.1°C
20 October	21°C	20.9°C	17.6°C	24.1°C
21 October	21.4°C	21.3°C	17.7°C	23.6°C
22 October	21.2°C	21.7°C	18°C	23.9°C
23 October	20.4°C	21°C	18.7°C	24.3°C
24 October	20.1°C	20.9°C	19°C	24.4°C
25 October	20.1°C	21.3°C	18.8°C	24.2°C
26 October	20.1°C	21.2°C	18.7°C	23.9°C
27 October	20.8°C	20.7°C	18.7°C	24.3°C
28 October	20.7°C	19.9°C	18.6°C	23.9°C
29 October	20.6°C	20.7°C	18.6°C	24.3°C
30 October	21.3°C	20.5°C	18.2°C	24.2°C
31 October	21.4°C	21.2°C	18.9°C	24°C

Fernandina Island water temp chart in October

Average water temperature in Fernandina Island in October over a decade

2016	2017	2018	2019	2020
19.9°C	20°C	21.5°C	20.1°C	19.5°C

2021	2022	2023	2024	2025
20.6°C	18.8°C	23.7°C	21.1°C	20.1°C

Fernandina Island water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

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Our report for Fernandina Island is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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Date (day and month)

Water temperature: min 16°C

Average temperature Maximum temperature