Your April weather guide
MildWeather in Sardinia in April
Sardinia in April suits a mild-weather break rather than a beach holiday built around swimming. Average daytime highs reach 18°C, but the sea is cold at 14.6°C and there are about 8 rainy days. For a UK traveller, the appeal is comfortable weather for being outdoors without summer heat. The catch is that you need flexible plans and layers, rather than assuming every day will be warm enough to sit by the water.
Long-term climate averages for Olbia (Costa Smeralda), not a forecast · 1991-2020
Sardinia, month by month
Your snapshot
At a glance
The useful details for Olbia (Costa Smeralda).
- Average daytime high
- 18.0°C
- 9 in 10 days stay below 21°C
- Average night-time low
- 10.7°C
- coldest 10% of nights: 8°C or lower
- Compared with London
- +4.5°C
- London averages 13.5°C in April
- Sea temperature
- 14.6°C
- year to year: 14°C to 15°C
- Sunshine per day (est.)
- 7.1h
- 54% of 13.1 h of daylight
- Rainy days (1 mm+)
- 8
- 53 mm over the month
- Humidity
- 75%
- Days over 25°C
- 0%
- none over 30°C
- Record high 1991-2020
- 29.1°C
- 2003-04-30
- Record low 1991-2020
- 5.1°C
- 1992-04-17
- Flight from London
- ≈ 2 h 24 min
- 1358 km, short-haul (estimate for a direct flight)
Records are observed extremes within 1991-2020, not typical holiday conditions. Warm-day percentages are shares of days, not day counts.
How April compares
April is the 7th warmest month of the year in Sardinia and ranks 90th of 134 destinations we compare for April - see where else is hot in April. Within Italy it is 3rd of 16 (Italy in April). Against London's average high of 13.5°C in April, Sardinia is 4.5°C warmer by day and 5.6°C warmer at night.
Daytime and night-time in April
The typical April day in Sardinia peaks at 18.0°C, but that is an average: the warmest 10% of days reach 21.4°C or more. Roughly 1 in 250 days top 25°C. Nights average 10.7°C; one night in ten drops to 8.2°C or lower, so pack a layer for evenings - it is genuinely cool after dark. Between 1991 and 2020 the hottest April day here reached 29.1°C (2003-04-30) and the coldest night 5.1°C (1992-04-17).
Rain in April
Wet (more than 8 rainy days): about 8 days with 1 mm or more, 53 mm in total. Year to year it varies a lot - the wettest April was 2020 with 151 mm, the driest 2016 with 16 mm. Humidity averages 75%.
Sea temperature in April
The sea averages 14.6°C - too cold for most (under 18°c). Depending on the year it ranges from 14.0°C to 15.1°C. For the warmest sea here, come in August (25.2°C).
Sunshine and daylight
Around 7.1 hours of sunshine a day (estimated from cloud cover), 13.1 hours of daylight: the sun rises about 06:43 and sets about 20:01 local time in mid-April. Average cloud cover is 46%.
Is April a good time to visit Sardinia?
April is not the strongest month here: mild days and frequent rain. The best months for Sardinia on our scoring are July, August, June; months averaging 25°C or more: Jun, Jul, Aug, Sep.
Milder than London, but not summer weather
With an average daytime high of 18°C, April is well suited to walking and spending time outside without planning everything around avoiding midday heat. Sardinia is 4.5°C warmer than London on average during the day, so the difference should be noticeable, but it is not a move into reliably hot weather. The warmest days reach 21.4°C or more, making lighter clothing useful when conditions allow. Pack trousers, light tops and a jumper rather than relying on a summer wardrobe. This month suits travellers who prefer mild conditions; those wanting sustained warmth for lying on the beach may find it too cool.
Allow for rain without writing off outdoor plans
April brings about 8 rainy days, so rain needs a place in your plans rather than being treated as an unlikely interruption. Carry a waterproof jacket and choose clothes you can layer as conditions change. There is still about 7.1 hours of sunshine a day within 13.1 hours of daylight, leaving scope for time outdoors when the weather is favourable. Those averages do not promise clear skies throughout your stay, though. Keep your plans movable and use brighter spells for the activities you most want to do outside. April is less suitable if your enjoyment depends on uninterrupted sunshine.
The sea is the main limitation
The sea averages 14.6°C, which is cold rather than merely refreshing. If relaxed swimming is central to your holiday, April is a poor match. Time beside the water is a more realistic focus than long swims, and sunshine alone does not make the sea comfortable. Evenings also call for a change of clothing: average night lows are around 11°C, with the coldest nights dropping to 8.2°C or lower. Keep a warm layer available if you plan to stay outside after dark. The distinction is simple: April can suit an outdoor holiday, but it is not dependable beach-and-swim weather.
A little perspective
Sardinia through the year
April is highlighted. See how it compares with the rest of the year.
| Month | Day | Night | Sea | Sun/day | Rain mm | Rainy days | Days 25°C+ |
|---|---|---|---|---|---|---|---|
| January | 12.9°C | 7.4°C | 13.8°C | 4.4 | 56 | 8 | 0% |
| February | 13.2°C | 7.1°C | 13.3°C | 5.5 | 43 | 8 | 0% |
| March | 15.4°C | 8.8°C | 13.6°C | 6.3 | 56 | 8 | 0% |
| AprilSelected | 18.0°C | 10.7°C | 14.6°C | 7.1 | 53 | 8 | 0% |
| May | 22.1°C | 14.2°C | 17.3°C | 8.4 | 44 | 6 | 17% |
| Junebest | 26.8°C | 18.1°C | 20.9°C | 11.1 | 17 | 3 | 69% |
| Julybest | 30.0°C | 21.0°C | 23.8°C | 12.7 | 7 | 1 | 96% |
| Augustbest | 30.3°C | 21.5°C | 25.2°C | 11.2 | 12 | 2 | 98% |
| September | 25.8°C | 18.6°C | 23.6°C | 7.8 | 37 | 6 | 64% |
| October | 21.9°C | 15.5°C | 20.9°C | 5.7 | 65 | 8 | 16% |
| November | 17.1°C | 11.7°C | 17.9°C | 4.3 | 78 | 10 | 0% |
| December | 13.9°C | 8.8°C | 15.2°C | 4.2 | 62 | 9 | 0% |
Day = average daytime high, night = average night-time low, 1991-2020.Sun is hours per day; rainy days count 1 mm or more.
Day, night and sea
Monthly average temperatures, 1991-2020
- Day
- Night
- Sea
Best months here
On warmth, low rainfall and sunshine, start with these.
Keep exploring
Similar in April
Closest matches on daytime temperature, sea temperature and sunshine, in other countries.
Portugal · 18°C by day · sea 15°C
Lisbon
Spain · 18°C by day · sea 14°C
Lloret de Mar
Spain · 17°C by day · sea 14°C
Barcelona
Croatia · 17°C by day · sea 14°C
Split
Spain · 19°C by day · sea 15°C
Salou
A little more detail
Sardinia in April FAQs
Plain answers, grounded in the averages.
Is Sardinia hot in April?
Sardinia is mild in April: the average daytime high is 18.0°C and nights average 10.7°C. Roughly 1 in 250 April days reach 25°C.
Can you swim in the sea in Sardinia in April?
The sea around Sardinia averages 14.6°C in April, which is cold for swimming without a wetsuit. Between 1991 and 2020 it ranged from 14°C to 15°C depending on the year.
How much does it rain in Sardinia in April?
Sardinia sees about 8 rainy days (1 mm or more) and 53 mm of rain in a typical April. The wettest April between 1991 and 2020 was 2020 (151 mm) and the driest was 2016 (16 mm).
How sunny is Sardinia in April?
Sardinia gets around 7.1 hours of sunshine a day in April out of 13.1 hours of daylight (estimated from average cloud cover).
How does Sardinia compare with the UK in April?
Sardinia is on average 4.5°C warmer than London by day in April (18.0°C against 13.5°C).
What is the hottest April on record in Sardinia?
Between 1991 and 2020 the hottest April day in Sardinia reached 29.1°C on 2003-04-30, and the coldest night dropped to 5.1°C on 1992-04-17.
Is April a good choice if I want hot weather?
No - April is mild rather than hot, with average daytime highs of 18°C. Days reaching 25°C are not typical. If heat is your priority, June, July and August are better months to consider for Sardinia.
Is Sardinia close enough for a short break from London?
The flight from London takes about 2 h 24 min, making Sardinia a short-haul option. April works best for a break focused on mild-weather time outdoors, provided you are comfortable adjusting plans for rain rather than expecting guaranteed beach weather.
About these averages
ERA5-Land climate reanalysis via Open-Meteo (11 km grid) and NOAA Coral Reef Watch 5 km sea temperatures, 1991-2020
Averages computed from daily values at Olbia (Olbia (Costa Smeralda)). Sea temperature from the nearest 5 km sea cell, 2.3 km from that point. Sunshine hours are estimated from average cloud cover.Records are the highest and lowest daily values in that 30-year period, not all-time records. These are climate averages, not a forecast for your trip. How we measure holiday weather
- Hot · 25°C+
- Warm · 20°C to below 25°C
- Mild · 15°C to below 20°C
- Cool · below 15°C