Greece in April
In April the sea does not reach 22 °C in any of the 12 coastal regions; the average runs from 18.2 °C in Central Greece to 19.1 °C in Epirus. The weather is comfortable for walking and sightseeing (average temperature 16 to 24 °C, little rain) in 373 of the 1,600 towns and villages with a page; in the rest, the average temperature is below 16 °C in 1,225 and rain is over 50 mm in 2. On the 15th daylight lasts 13 h 15 min in Thessaloniki and 13 h 3 min in Heraklion.
- Warmest sea
- 19.1 °CEpirus, NOAA OISST 1991–2020
- Coolest sea
- 18.2 °CCentral Greece, NOAA OISST 1991–2020
- Comfortable for walking
- 373 placesof 1,600 towns and villages with a page, NASA POWER 2001–2020
- Day length, Thessaloniki
- 13.3 hon the 15th, Greek time
- Day length, Heraklion
- 13.1 hon the 15th, Greek time
- Rainiest regions
- Epirus, Ionian Islandsaverage rain 51 and 49 mm for the month across their places (NASA POWER 2001–2020)
The sea
Average sea temperature in April at each region's official bathing-water beaches (NOAA OISST, 1991–2020). Each region links to its beaches in the beach list.
| Region | Sea °C | Beaches at 22 °C or warmer |
|---|---|---|
| Epirus | 19.1 | 0 of 36 |
| Crete | 19.1 | 0 of 157 |
| Ionian Islands | 18.9 | 0 of 148 |
| South Aegean | 18.9 | 0 of 279 |
| Peloponnese | 18.7 | 0 of 145 |
| Western Greece | 18.6 | 0 of 79 |
| Central Macedonia | 18.6 | 0 of 114 |
| Attica | 18.5 | 0 of 158 |
| North Aegean | 18.5 | 0 of 122 |
| Thessaly | 18.5 | 0 of 103 |
| Eastern Macedonia and Thrace | 18.3 | 0 of 56 |
| Central Greece | 18.2 | 0 of 140 |
| Western Macedonia | – | 0 of 1 |
All bathing-water beaches in Greece
The average is taken over the beaches of the official register, not over all the sea of the region. Each NOAA cell is 0.25 degrees (about 25 km) wide, so close to the shore the temperature can differ a little. Beaches with no nearby sea cell (a lake, for example) are left out of the temperature column.
Comfortable for walking and sightseeing
Places with a page of their own where the month's average temperature is 16 to 24 °C and rain stays at or under 50 mm (NASA POWER MERRA-2, 2001–2020). Temperature is adjusted for the altitude of the place where OpenStreetMap records one. Up to 6 are shown per region: cities and towns first, then villages with a known altitude.
In April most places are below the comfortable band: the average temperature is under 16 °C in 1,225 of 1,600.
South Aegean (135 of 171)
- Rhodes17.2 °C
- Kos16.7 °C
- Antimachia16.6 °C
- Pothia16.6 °C
- Archangelos17.1 °C
- Afantou17.2 °C
Crete (80 of 136)
- Heraklion16.4 °C
- Rethymno16.1 °C
- Agios Nikolaos16.1 °C
- Nea Alikarnassos16.4 °C
- Ierapetra16.1 °C
- Sitia16.6 °C
Peloponnese (79 of 315)
- Messini17.0 °C · 15 m
- Gythio16.4 °C · 5 m
- Neapoli16.0 °C · 4 m
- Skala16.3 °C · 18 m
- Ermioni16.3 °C · 5 m
- Aria16.2 °C · 27 m
Western Greece (35 of 76)
- Pyrgos16.3 °C
- Amaliada16.1 °C · 39 m
- Kato Achaia16.1 °C · 22 m
- Etoliko17.1 °C · 5 m
- Andravida16.1 °C · 6 m
- Vartholomio16.1 °C · 24 m
North Aegean (23 of 104)
- Vathy16.2 °C · 56 m
- Evdilos16.1 °C
- Agios Kirikos16.1 °C
- Mitilinii16.2 °C
- Chora16.2 °C · 24 m
- Pythagorio16.2 °C · 43 m
Epirus (10 of 75)
- Arta16.4 °C · 38 m
- Kostakioi16.5 °C · 24 m
- Agios Dimitrios16.4 °C · 43 m
- Kanali16.2 °C · 5 m
- Mytikas16.2 °C · 5 m
- Psathaki16.2 °C · 5 m
Attica (7 of 123)
Ionian Islands (4 of 136)
- Kalamaki16.2 °C
- Laganas16.2 °C
- Ano Vasilikos16.3 °C
- Xirokastello16.3 °C
Beside each place: the month's average temperature and, where OpenStreetMap records it, the altitude. These are regional model values, not a measurement in the place.
Islands with comfortable weather and a warm sea
In April no island with a page has a main town with comfortable weather and a sea of 22 °C or warmer, so there is no list.
The weather is read at the island's main town by the same rule as the list of places (NASA POWER MERRA-2) and the sea from the nearest NOAA OISST cell. These are typical conditions, not a forecast.
Where to swim
In April the average sea temperature does not reach 22 °C at any official beach, so there is no list. The sea reaches 22 °C at some beaches from May to September.
Daylight
Sunrise and sunset on the 15th, north to south, in Greek local time.
| Place | Sunrise | Sunset | Day length |
|---|---|---|---|
| Thessaloniki | 06:51 | 20:05 | 13 h 15 min |
| Athens | 06:51 | 19:59 | 13 h 9 min |
| Heraklion | 06:48 | 19:51 | 13 h 3 min |
Calculated from the place's position and the date, without local terrain. Day length changes by a few minutes a day, so the values hold for the middle of the month.
The other months
See also
- All bathing-water beacheslist
- All islandslist
- Regions of Greecelist
- Sights of Greecelist
- Greece month by monthall months
Sources
Every figure on this page comes from the sources below, with the date each was updated.
- Monthly climate normalsNASA POWER, MERRA-2 meteorological model · 2001–2020 climatology period returned by NASA POWER · Date:
- Sea temperature (NOAA OISST)NOAA National Centers for Environmental Information / Physical Sciences Laboratory · OISST v2.1 monthly long-term mean climatology, 1991-2020 period · Date:
- Designated bathing waters (locations)Ministry for Environment and Energy: YPEN geoportal · Current bathing season register · Date:
- Bathing water quality classificationEuropean Environment Agency: WISE Bathing Water Directive database · Latest assessed season in the EEA database; every season from 2011 is kept as a per-beach history · Date:
- Municipal boundaries, settlements and settlement altitudesOpenStreetMap (Geofabrik Greece extract, 24 Sep 2026), ODbL · Date:
These are typical conditions from regional models, not a forecast. Sea: NOAA OISST v2.1, 1991–2020, 0.25 degree cells. Temperature and rain: NASA POWER (MERRA-2), 2001–2020, as monthly averages. Daylight: calculated for the 15th of the month. Water quality: EEA, classified by season.
Page updated .