Casa Rosanna › Porto Ottiolu month by month
Porto Ottiolu month by month
In Porto Ottiolu the sea is above 20 °C from June to October and reaches 25 °C in August. July and August are the hottest months (highs of 30 °C) with almost no rain; September still has a warm sea and fewer people.
Updated 04/11/2026 by Francesca and Antonio, who run Casa Rosanna in Porto Ottiolu.
Weather and sea month by month
Long-term averages for Budoni: air highs and lows, sea temperature and rainy days.
| Month | Air high | Air low | Sea | Rainy days | In short |
|---|---|---|---|---|---|
| Jan | 14 °C | 7 °C | 14 °C | 5 | mild, short days: walks and Olbia |
| Feb | 14 °C | 7 °C | 13 °C | 5 | coldest sea of the year |
| Mar | 16 °C | 8 °C | 14 °C | 5 | spring: hiking and cycling |
| Apr | 18 °C | 10 °C | 15 °C | 5 | flowers, trails and Monte Nieddu waterfalls |
| May | 22 °C | 13 °C | 17 °C | 4 | empty beaches, first swims for the brave |
| Jun | 27 °C | 17 °C | 21 °C | 2 | swimming season starts, 15 hours of daylight |
| Jul | 30 °C | 20 °C | 24 °C | 1 | peak season: reach the famous beaches early |
| Aug | 30 °C | 20 °C | 25 °C | 2 | hottest month, peak season, Ferragosto on the 15th |
| Sep | 26 °C | 18 °C | 23 °C | 4 | sea still warm, fewer people: great for snorkelling |
| Oct | 22 °C | 14 °C | 21 °C | 6 | swimming on sunny days, first rain |
| Nov | 18 °C | 11 °C | 18 °C | 8 | wettest month |
| Dec | 15 °C | 8 °C | 16 °C | 7 | mild, shortest days of the year |
When to swim
From June to October the sea is above 20 °C; the warmest period runs from early July to late September (23–25 °C). In May the sea is around 17 °C: short swims for the brave.
Best time to avoid the crowds
June and September: warm sea, long days and quieter beaches than July and August. In peak season, reach the San Teodoro beaches early in the morning.
Hiking and low season
From March to May and in October the weather is mild (highs of 16–22 °C): ideal for trails, cycling and trips to Tavolara and Olbia. November is the wettest month, with about 8 rainy days.
The house is cheapest from October to March: see the calendar.
Frequently asked questions
When can you swim in Porto Ottiolu?
From June to October the sea is above 20 °C; in August it reaches about 25 °C.
What is the best month to visit Porto Ottiolu?
September: sea around 23 °C, highs of 26 °C and fewer people than in August. June is similar, with a slightly cooler sea (21 °C).
Does it rain a lot in Porto Ottiolu?
Very little: 1–2 rainy days a month in summer. The wettest months are November and December, with 7–8 rainy days.
Stay in Porto Ottiolu, walking distance from beach and marina
Casa Rosanna: a detached house for 5 guests, 2 bedrooms, patio and parking. Book direct and save 20% compared with Booking.com.
More guides
- How to get to Porto Ottiolu
- Beaches of Porto Ottiolu and Budoni
- Things to do in Porto Ottiolu and around
- Distances from Porto Ottiolu
- Porto Ottiolu, San Teodoro or Budoni: where to stay?
- Quick answers about Casa Rosanna and Porto Ottiolu
- What will the sea be like in Porto Ottiolu on my dates?
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- Long stays in low season in Porto Ottiolu
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- Which beach today near Budoni and San Teodoro?
Download the data as CSV (CC BY 4.0 licence, with attribution) · README
Data source: WeatherSpark – average weather in Budoni (long-term averages; days with at least 1 mm of rain; sea temperature converted from °F and rounded). These are averages: any single year can differ.
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