Rethymno in April: weather, water temperatures and things to do
Is April a good time to visit?
April in Rethymno is warm, with daytime temperatures averaging +19 °C. These conditions suit walks and sightseeing. The water is cold, so this month is unsuitable for a swimming holiday.
Weather in April
Average daytime temperatures vary little between early, mid- and late April. There is no clear advantage in warmth between these periods.
- Water
- +17 °C
- Daytime air
- +19 °C
- Night-time air
- +13 °C
Sun and precipitation in April
Monthly averages
Sunny
15 days
Sun and clouds
12 days
Cloudy
3 days
By part of the month
| Dates | Sunny | Sun and clouds | Cloudy | Days with precipitation |
|---|---|---|---|---|
| 1–10 | 4 days | 5 days | 1 day | 2 days |
| 11–20 | 6 days | 3 days | 1 day | 1 day |
| 21–30 | 5 days | 4 days | 1 day | 3 days |
Early, mid or late April?
| Travel dates | Day | Night | WaterWater | Days with precipitation |
|---|---|---|---|---|
| 1–10 April | +18 °C | +13 °C | +17 °C | about 2 out of 10 |
| 11–20 April | +19 °C | +13 °C | +17 °C | about 1 out of 10 |
| 21–30 April | +20 °C | +14 °C | +18 °C | about 3 out of 10 |
Water in April
Seasonal data gives an average water temperature of +17 °C for the month. It averages +17 °C in the first ten days and +18 °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 April
Historical records show that April has precipitation from time to time.
March, April or May: which should you choose?
| Month | Day | Night | WaterWater |
|---|---|---|---|
| March | +16 °C | +11 °C | +16 °C |
| April | +19 °C | +13 °C | +17 °C |
| May | +23 °C | +17 °C | +20 °C |
April is warmer during the day than March, while water temperatures are similar. The water is cold in both months. Both the air and the water are warmer in May than in April.
The annual charts for Rethymno compare air and water temperatures throughout the year. For historical weather in April across different years, see the weather archive.
Things to do in April
- Around the Venetian harbour, you can see the old customs house and the Ottoman-era lighthouse.
- The Venetian Fortezza offers panoramic views of Rethymno and the Cretan Sea.
- The temporary exhibition of the Archaeological Museum of Rethymno is housed in the Church of St Francis. It displays regional finds from the Palaeolithic to the Venetian period.
About the data
Air temperatures use the WorldWeatherAI archive for 2020–2025. Precipitation uses data for 2020–2025.Sea temperature data source: NASA. Averages from complete months in: 2019, 2020, 2021, 2022, 2024, 2025, 2026.
Cloud cover is estimated from local six-hour intervals weighted by their overlap with daylight: up to 25% clear or mostly clear, 75% or more mostly cloudy, and partly cloudy in between. These are the site’s categories. Rounded day counts add up to the period length; icons do not represent particular dates. Precipitation is counted separately and may coincide with sunshine. Sunshine hours come from the archive, not from cloud cover. Each metric requires complete data for the same set of years; incomplete metrics are omitted.