Water temperature Mallorca in September: warm sea, quiet beaches
September: Mallorca’s quiet luxury by the water
September on Mallorca is a month for connoisseurs. The sea stores the warmth of the summer, the beaches become noticeably more relaxed and the island gets more space again. Anyone travelling because of the water temperature now finds almost ideal conditions: the average water temperature is 24.7°C and feels pleasantly soft when swimming, snorkelling or taking long bathing stops.
Compared with high summer, September feels less crowded, without the bathing character being lost. That is exactly why it is a premium enjoyment month: in the morning a quiet entry into the sea, at midday a long break in the bay, in the evening a restaurant by the harbour. Especially around Santanyí, this mixture fits very well, because small coves, stylish places and short distances come together.
Anyone who wants to place the September values in the course of the year will find the overview in the main article on water temperature Mallorca. For the direct comparison with high summer, it is also worth taking a look at the Mallorca weather August.
| Indicator | Value |
|---|---|
| Water temperature (avg) | 24.7°C |
| Air temperature max avg | 27°C |
| Air temperature min avg | 16.6°C |
| Sunshine hours avg | 7.9 h/day |
| Precipitation | 51 mm |
| Rainy days | 4 |
Where swimming is especially beautiful in September
For stylish bathing days, the south-east is strong: Santanyí combines clear water, bright rock edges and a pleasantly relaxed late-season mood. Anyone who starts early often experiences the coves at their best: the light is soft, the water calm, and the routes to breakfast, market or dinner remain short.
Es Trenc is also a classic in September. The beach retains its Caribbean-seeming character, but feels less hectic than in the most intense summer weeks. For guests looking for sand, shallow water and a long bathing day, this is a very good time.
In the south-west, Port d’Andratx has a different appeal: less classic beach day, more elegant coastal rhythm. Swimming, boat, harbour promenade and dinner can be combined especially well here. Especially in September, when the sea remains warm and the days no longer feel quite so high-summer-like, this quiet, high-quality Mallorca moment emerges.
Weather feel: warm sea, more calm, some change possible
The air temperatures remain suitable for bathing, while the nights become fresher again. This makes September pleasantly balanced: sea and sun during the day, more comfort in the evening when walking or eating outdoors. The 7.9 hours of sunshine per day continue to give plenty of room for beach plans.
At the same time, the month already shows a first transition. With 51 mm of precipitation and 4 rainy days, somewhat more weather dynamics are possible than in high summer. For travel planning, this does not mean doing without, but flexibility: keep the beach bag ready, but also plan good restaurants, small places and short excursions. A broader classification is offered by the page best time to visit Mallorca.