Your April weather guide
CoolWeather in Sunny Beach in April
April in Sunny Beach suits a cool-weather break, not a holiday built around sunbathing or swimming. Average daytime highs are 14.9°C, nights fall to 8°C and the sea is cold at 9.4°C. For a UK traveller, the main catch is that the weather is only slightly warmer than London, rather than a convincing change of season. Go if you are happy walking in layers and keeping plans flexible around rain; choose a warmer month if beach weather matters most.
Long-term climate averages for Nesebar (adjacent), not a forecast · 1991-2020
Sunny Beach, month by month
Your snapshot
At a glance
The useful details for Nesebar (adjacent).
- Average daytime high
- 14.9°C
- 9 in 10 days stay below 20°C
- Average night-time low
- 8.0°C
- coldest 10% of nights: 5°C or lower
- Compared with London
- +1.4°C
- London averages 13.5°C in April
- Sea temperature
- 9.4°C
- year to year: 8°C to 10°C
- Sunshine per day (est.)
- 6.0h
- 45% of 13.2 h of daylight
- Rainy days (1 mm+)
- 8
- 45 mm over the month
- Humidity
- 76%
- Days over 25°C
- 0%
- none over 30°C
- Record high 1991-2020
- 27.4°C
- 2016-04-18
- Record low 1991-2020
- -0.5°C
- 2003-04-08
- Flight from London
- ≈ 3 h 36 min
- 2304 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 Sunny Beach and ranks 130th of 134 destinations we compare for April - see where else is hot in April. Against London's average high of 13.5°C in April, Sunny Beach is 1.4°C warmer by day and 2.9°C warmer at night.
Daytime and night-time in April
The typical April day in Sunny Beach peaks at 14.9°C, but that is an average: the warmest 10% of days reach 19.6°C or more. Roughly 1 in 333 days top 25°C. Nights average 8.0°C; one night in ten drops to 4.5°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 27.4°C (2016-04-18) and the coldest night -0.5°C (2003-04-08).
Rain in April
Wet (more than 8 rainy days): about 8 days with 1 mm or more, 45 mm in total. Year to year it varies a lot - the wettest April was 1997 with 112 mm, the driest 2018 with 6 mm. Humidity averages 76%.
Sea temperature in April
The sea averages 9.4°C - too cold for most (under 18°c). Depending on the year it ranges from 7.9°C to 10.4°C. For the warmest sea here, come in August (25.3°C).
Sunshine and daylight
Around 6.0 hours of sunshine a day (estimated from cloud cover), 13.2 hours of daylight: the sun rises about 06:28 and sets about 19:51 local time in mid-April. Average cloud cover is 55%.
Is April a good time to visit Sunny Beach?
April is not the strongest month here: cool days and frequent rain. The best months for Sunny Beach on our scoring are August, July, June; months averaging 25°C or more: Jul, Aug.
Expect spring layers, not reliable warmth
The daytime temperature advantage over London is just 1.4°C, so do not pack as though you are heading into summer. A light jumper and jacket make more sense than relying on shorts, with a warmer layer for evenings. The warmer April days can reach 19.6°C or more, making time outdoors more comfortable, but that is not the everyday expectation. At the other end, the coldest nights fall to 4.5°C or below. Keep longer outdoor plans for the warmer part of the day and expect to add layers after dark. This month suits travellers who prefer cool conditions and do not need dependable heat.
Plan around cold water and changeable skies
The sea is the clearest reason to rethink a swimming-led trip: at 9.4°C, it is cold rather than merely bracing. Time beside the water is a more realistic plan than relaxed bathing. There is still scope for being outdoors, with about 6 hours of sunshine within 13.2 hours of daylight, but long days do not mean uninterrupted sun. About 8 rainy days make a waterproof jacket useful, and it pays to leave room to move outdoor plans around. April works better if you can enjoy a dry, bright spell when it arrives without feeling that cloudy or wet weather has spoiled the purpose of the holiday.
A little perspective
Sunny Beach 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 | 6.6°C | 1.2°C | 7.0°C | 3.4 | 53 | 8 | 0% |
| February | 7.9°C | 1.9°C | 5.9°C | 3.8 | 47 | 7 | 0% |
| March | 10.8°C | 4.3°C | 6.7°C | 4.6 | 53 | 9 | 0% |
| AprilSelected | 14.9°C | 8.0°C | 9.4°C | 6.0 | 45 | 8 | 0% |
| May | 20.0°C | 13.2°C | 15.6°C | 7.2 | 47 | 9 | 5% |
| Junebest | 24.6°C | 17.9°C | 21.3°C | 9.1 | 48 | 8 | 45% |
| Julybest | 27.2°C | 20.3°C | 24.3°C | 10.8 | 42 | 7 | 86% |
| Augustbest | 27.4°C | 20.7°C | 25.3°C | 10.2 | 31 | 5 | 85% |
| September | 23.1°C | 16.9°C | 22.6°C | 7.3 | 58 | 7 | 31% |
| October | 18.0°C | 12.4°C | 18.5°C | 4.7 | 62 | 7 | 3% |
| November | 12.9°C | 7.7°C | 14.0°C | 3.6 | 55 | 7 | 0% |
| December | 8.1°C | 3.0°C | 9.8°C | 3.3 | 59 | 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.
A little more detail
Sunny Beach in April FAQs
Plain answers, grounded in the averages.
Is Sunny Beach hot in April?
Sunny Beach is cool in April: the average daytime high is 14.9°C and nights average 8.0°C. Roughly 1 in 333 April days reach 25°C.
Can you swim in the sea in Sunny Beach in April?
The sea around Sunny Beach averages 9.4°C in April, which is cold for swimming without a wetsuit. Between 1991 and 2020 it ranged from 8°C to 10°C depending on the year.
How much does it rain in Sunny Beach in April?
Sunny Beach sees about 8 rainy days (1 mm or more) and 45 mm of rain in a typical April. The wettest April between 1991 and 2020 was 1997 (112 mm) and the driest was 2018 (6 mm).
How sunny is Sunny Beach in April?
Sunny Beach gets around 6.0 hours of sunshine a day in April out of 13.2 hours of daylight (estimated from average cloud cover).
How does Sunny Beach compare with the UK in April?
Sunny Beach is on average 1.4°C warmer than London by day in April (14.9°C against 13.5°C).
What is the hottest April on record in Sunny Beach?
Between 1991 and 2020 the hottest April day in Sunny Beach reached 27.4°C on 2016-04-18, and the coldest night dropped to -0.5°C on 2003-04-08.
Is April warm enough for a beach holiday?
Not if your priority is dependable sunbathing and comfortable sea swimming. Average daytime highs are 14.9°C and the sea is 9.4°C. Think of it as a cool spring stay beside the coast, with beach time dependent on the weather.
Which months are better if warmth is the priority?
August, July and June are the better choices overall for weather here. If warmth is the main reason for travelling, choose those rather than April, whose cool days and cold sea make it a less suitable match.
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 Nesebar (Nesebar (adjacent)). Sea temperature from the nearest 5 km sea cell, 2 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