# Mallorca in September: weather, temperatures and rain days > Weather in Mallorca in September: still summery and warm, with the first heavy rain days. Readings from 15 years in Palma and a calendar for every day. Canonical: https://wettermallorca.com/en/september/ Updated on: 2026-10-02 In September it stays summery and warm in Mallorca, and the sea is warmer than in July. At the same time the rain returns. ## In short In September, Palma de Mallorca reaches 28.3 °C by day and 21.0 °C at night on average. There are 5.1 rain days and 56.3 mm of rainfall, and the sea is around 25.9 °C. The values are averages for the years 2011 to 2025 at the Palma Puerto station. A very good swimming month, with more rain than in high summer. ## Key points - By day 28.3 °C on average, at night 21.0 °C in Palma de Mallorca. - 5.1 rain days with at least 1 mm, 56.3 mm of rainfall in total. - Sea temperature off the Bay of Palma: 25.9 °C on average. - Extremes 2011 to 2025: at most 34.1 °C, at least 14.8 °C. - Warm sea and less heat, but the rain returns. ## What the weather is like in Mallorca in September In Mallorca September is a late-summer month. The heat eases, the sea stays very warm. Rain increases markedly: after November and October, September is the month with the third largest amount of rain. On average over the years 2011 to 2025, the Palma Puerto station reaches 28.3 °C by day and 21.0 °C at night in September. On 5.1 days at least 1 mm of rain falls, adding up to 56.3 mm in the month. For comparison: in August the average high is 30.9 °C, in October it is 25.1 °C. For rainfall, September ranks number 3 of 12 months. The wettest is November with 87.3 mm, the driest is July with 3.0 mm. Individual days deviate strongly from the average. The highest value for September in the years 2011 to 2025 was 34.1 °C on 4 September 2023, the lowest 14.8 °C on 17 September 2017. The figures apply to Palma right on the coast. Inland and in the Serra de Tramuntana, the weather can turn out very different on the same day. ## Day by day: September in Palma in the calendar The calendar shows for each day in September the average high and low for the years 2011 to 2025 and the share of years in which at least 1 mm of rain fell on that date. These are averages from past years and not a forecast. For the next few days, see the [live forecast for Mallorca](https://wettermallorca.com/en/forecast/). ## Sea temperature in Mallorca in September Off the Bay of Palma the sea averages 25.9 °C in September. In August it is 26.9 °C, in October 23.5 °C. The sea has stored the warmth of the summer. Swimming is pleasant throughout the month. The value comes from the NOAA OISST satellite analysis for open water off the bay, averaged over 2011 to 2025. In shallow coves and right at the beach the water can be warmer or colder. ## What to pack for Mallorca in September For September you pack summer clothing and swimwear. Add a light jacket or a thin jumper for later evenings and rain protection for showers. Sun cream is still needed. ## Which activities suit the weather in September - Beach: Very good, the water is warmer than in July. - Boat trip: Good on calm days. In thundery weather, follow the provider's advice. - Hiking: Easier again than in high summer, best in the morning. - Caves: A good choice for one of the rain days. - City: More pleasant than in July and August, still warm at midday. The [climate table for Mallorca](https://wettermallorca.com/en/climate-table/) and the overview of the [best time to visit](https://wettermallorca.com/en/best-time-to-visit/) show how September fits into the whole year. Right next to it are [August](https://wettermallorca.com/en/august/) and [October](https://wettermallorca.com/en/october/). The travel guide [mallorcaplaner.com](https://mallorcaplaner.com/) collects ideas for outings. ## Frequently asked questions ### How warm is it in Mallorca in September? In Palma de Mallorca the average high in September is 28.3 °C and the average low is 21.0 °C. These are averages for the years 2011 to 2025 at the Palma Puerto station on the coast. Individual days can be much warmer or cooler. ### How often does it rain in Mallorca in September? On average Palma has 5.1 rain days in September, meaning days with at least 1 mm of precipitation. The total is 56.3 mm. For rainfall, September ranks number 3 of 12 months. The wettest is November with 87.3 mm, the driest is July with 3.0 mm. ### Can you swim in the sea in Mallorca in September? The sea off the Bay of Palma averages 25.9 °C in September. The sea has stored the warmth of the summer. Swimming is pleasant throughout the month. The value applies to open water, and in shallow coves it can be different. ### What should I pack for Mallorca in September? For September you pack summer clothing and swimwear. Add a light jacket or a thin jumper for later evenings and rain protection for showers. Sun cream is still needed. ### What were the highest and the lowest temperature in September in Palma de Mallorca? At the Palma Puerto station, the highest value for September in the years 2011 to 2025 was 34.1 °C, measured on 4 September 2023. The lowest was 14.8 °C on 17 September 2017. Earlier years are not part of this analysis, so these are not all-time records. ### Is September a good time to visit Mallorca? Yes. September combines a warm sea with easing heat. But expect some rain days that can be heavy, and keep your programme flexible. ### How reliable is a weather forecast for Mallorca in September? The live forecast for Palma covers around 9 to 10 days and comes from MET Norway. For later days in September, the calendar shows averages for the years 2011 to 2025. They tell you what is typical, not what the weather will be on your travel day. ## Sources - [AEMET OpenData, daily climate values](https://opendata.aemet.es/), checked on 2026-10-03 - [AEMET station inventory, station B228 Palma, Puerto (39.5542 N, 2.6253 E, 3 m)](https://opendata.aemet.es/centrodedescargas/productosAEMET), checked on 2026-10-03 - [NOAA OISST v2.1, daily sea surface temperature, via NOAA CoastWatch ERDDAP](https://coastwatch.pfeg.noaa.gov/erddap/griddap/ncdcOisst21Agg_LonPM180.html), checked on 2026-10-02 - [MET Norway, Locationforecast 2.0](https://api.met.no/weatherapi/locationforecast/2.0/documentation), checked on 2026-10-02