Rethymno in September: weather, sea and travel tips
Is September a good time to visit?
September in Rethymno suits a warm seaside stay if outdoor plans can change around rain. Days average +27 °C, so this remains a warm trip for anyone who prefers cool conditions.
Weather in September
September is nearly over, so the forecast matters more for travel in the next few days. Rethymno in October.
- Water
- +25 °C
- Daytime air
- +27 °C
- Night-time air
- +22 °C
Early, mid or late September?
| Travel dates | Day | Night | Sea |
|---|---|---|---|
| 1–10 September | +28 °C | +23 °C | +25 °C |
| 11–20 September | +28 °C | +22 °C | +25 °C |
| 21–30 September | +26 °C | +21 °C | +24 °C |
Hot days in September
Share of days when the daytime temperature reached +30 °C or higher, based on the weather archive.
Water in September
Seasonal data gives an average water temperature of +25 °C for the month. It averages +25 °C in the first ten days and +24 °C towards the end. These are seasonal averages, so the water on your travel dates can be warmer or cooler. Before your trip, check the water temperature and weather in the forecast for Rethymno.
Rainfall in September
In September, the average is 8 days with precipitation. In 2020–2025, the number ranged from 2 to 11 per month. Light precipitation is included in the count. This does not mean that it rains all day.
September or October: which should you choose?
| Month | Day | Night | Sea |
|---|---|---|---|
| September | +27 °C | +22 °C | +25 °C |
| October | +23 °C | +19 °C | +22 °C |
September has warmer days than October. October offers cooler conditions for walks.
The annual charts for Rethymno compare air and sea temperatures with the rest of the year. For a closer look at September, see the September charts and archive by year.
Things to do in September
- On a dry day, the Venetian harbour offers a short waterside walk with views of the lighthouse and old customs house. It need not take up a whole sightseeing day.
- The Fortezza is an option for a dry day, with views of the town and Cretan Sea from the Venetian fortress. It suits an interest in historic defences and panoramas.
- For a rainy day, the Archaeological Museum of Rethymno has an exhibition inside St Francis Church. Finds trace the region from its earliest settlements to Venetian times.
About the data
Air temperatures use the WorldWeatherAI archive for 2020–2025. Precipitation uses data for 2020–2025. Sea temperatures use WorldWeatherAI seasonal data.