# 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.

URL: https://casarosannaottiolu.it/en/porto-ottiolu-month-by-month/
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](https://casarosannaottiolu.it/en/#prezzi).

## 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.
See prices and availability: https://casarosannaottiolu.it/en/#prezzi · WhatsApp: https://wa.me/393476622493

Data source: [WeatherSpark – average weather in Budoni](https://weatherspark.com/y/62099/Average-Weather-in-Budoni-Italy-Year-Round) (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.