Water temperature in Cayos Siete Hermanos in September

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Is it warm enough to swim in Cayos Siete Hermanos in September? Average water temperature in Cayos Siete Hermanos in September is 29.3°C and therefore suitable for comfortable swimming. The warmest sea in Cayos Siete Hermanos in September is 30.9°C, and the coldest is 28.4°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Cayos Siete Hermanos

Changes water temperature in Cayos Siete Hermanos in September 2025, 2024

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

Sea temperature

Tides

Weather forecast

You can choose any other years:

Day	2025	2024	Min	Max
1 September	29.6°C	29.5°C	28.6°C	30°C
2 September	29.6°C	29.5°C	28.6°C	30.1°C
3 September	29.7°C	29.3°C	28.5°C	30°C
4 September	29.7°C	29.3°C	28.4°C	30.1°C
5 September	29.9°C	29.3°C	28.5°C	30°C
6 September	29.8°C	29.4°C	28.5°C	30.1°C
7 September	29.8°C	29.4°C	28.5°C	30.2°C
8 September	29.8°C	29.5°C	28.5°C	30.2°C
9 September	29.7°C	29.6°C	28.4°C	30.4°C
10 September	29.7°C	29.5°C	28.7°C	30.3°C
11 September	29.8°C	29.8°C	28.7°C	30.4°C
12 September	29.8°C	29.7°C	28.7°C	30.3°C
13 September	29.8°C	29.7°C	28.8°C	30.2°C
14 September	29.8°C	29.9°C	28.9°C	30.4°C
15 September	30.1°C	29.9°C	29°C	30.3°C

Day	2025	2024	Min	Max
16 September	30.2°C	29.9°C	29°C	30.2°C
17 September	29.9°C	30.3°C	29°C	30.5°C
18 September	30.1°C	30.5°C	29°C	30.5°C
19 September	29.9°C	30.5°C	29°C	30.5°C
20 September	30°C	30.2°C	29.1°C	30.8°C
21 September	30°C	30.2°C	28.9°C	30.6°C
22 September	30°C	30.2°C	28.9°C	30.5°C
23 September	30°C	30.1°C	28.9°C	30.4°C
24 September	30°C	30°C	28.9°C	30.4°C
25 September	29.8°C	30°C	28.9°C	30.3°C
26 September	29.7°C	30.5°C	28.9°C	30.6°C
27 September		30.4°C	28.9°C	30.9°C
28 September		30.8°C	28.9°C	30.8°C
29 September		30.4°C	28.8°C	30.4°C
30 September		30.5°C	28.9°C	30.5°C

Cayos Siete Hermanos water temp chart in September

Average water temperature in Cayos Siete Hermanos in September over a decade

2015	2016	2017	2018	2019
29.4°C	29.2°C	29.4°C	28.9°C	29.7°C

2020	2021	2022	2023	2024
29.2°C	29.2°C	29.3°C	30.3°C	29.9°C

Cayos Siete Hermanos sea state in September

Chart comparing the height of waves in Cayos Siete Hermanos in September over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Waves height in Cayos Siete Hermanos in September

Cayos Siete Hermanos water temperature during other months:

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

Temperature in neighboring cities

The nearest locations with the average water temperature in September. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

	Avr	Min	Max
Labadee	29.5°C	28.4°C	30.8°C
Maimon Bay	29.1°C	28.2°C	30.3°C
Amber Cove	29°C	28.2°C	30.2°C
Puerto Plata	29.1°C	28.1°C	30.5°C
Gonaives	30.2°C	29.2°C	31.5°C
Playa Dorada	29°C	28.1°C	30.3°C
Anse Rouge	30.2°C	29.2°C	31.6°C
Sosua	29°C	28.1°C	30.3°C
Saint-Marc	30.2°C	29.2°C	31.5°C
Delmas	30°C	29°C	31.2°C

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Our report for Cayos Siete Hermanos 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.

Region

Date (day and month)

Water temperature: min 16°C

Average temperature Maximum temperature