Greece / Peloponnese
Karathona Beach
Karathona Beach is a 1.4 km-long sandy beach facing west-south-west, 3.2 km south of Náfplio (Peloponnese, Greece). The sea averages 26.2 °C in August, its warmest month, and 15.1 °C in February; it is 21 °C or warmer in June–October. Recorded status on Wikidata: Blue Flag beach.
Average sea surface temperature by month. Current month outlined.
Month by month
October at Karathona Beach
Beach-day index 8.0/10 · Greece median 7.0
| Measure | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea °C | 15.8 °C | 15.1 °C | 15.2 °C | 16.3 °C | 19.1 °C | 22.9 °C | 25.5 °C | 26.2 °C | 25.1 °C | 23.0 °C | 20.5 °C | 17.8 °C |
| High °C | 11° | 12° | 15° | 19° | 25° | 30° | 33° | 32° | 28° | 23° | 17° | 13° |
| Low °C | 6° | 6° | 8° | 10° | 15° | 20° | 23° | 23° | 19° | 15° | 11° | 8° |
| Rain mm | 69 | 62 | 57 | 32 | 24 | 23 | 16 | 11 | 32 | 51 | 71 | 86 |
| Cloud % | 68 | 70 | 63 | 58 | 49 | 33 | 20 | 20 | 38 | 52 | 61 | 66 |
| Wind m/s | 4.2 | 4.2 | 3.8 | 3.5 | 3.2 | 3.4 | 3.7 | 4.0 | 3.5 | 3.7 | 3.8 | 4.1 |
| Daylight h | 9.8 | 10.8 | 11.9 | 13.1 | 14.2 | 14.7 | 14.5 | 13.7 | 12.5 | 11.3 | 10.2 | 9.6 |
| Record high/low | 19°/-3° | 21°/-4° | 29°/0° | 29°/4° | 35°/9° | 42°/14° | 42°/18° | 40°/19° | 38°/14° | 32°/8° | 27°/2° | 22°/-2° |
| Beach index | 3.0 | 2.8 | 3.0 | 4.4 | 7.9 | 9.5 | 8.9 | 9.1 | 9.4 | 8.0 | 4.7 | 3.5 |
Long-term monthly averages: air from NASA POWER (2001–2020), sea from NOAA OISST (1991–2020); records are the extremes of 2001–2020. How the index works.
When to go
The beach-day index peaks in June–September; June scores 9.5/10 with highs of 30 °C, sea at 22.9 °C and 23 mm of rain.
In June that is 0.3 points above the median of the 415 beaches in Greece covered by this atlas.
At its warmest the water here is 0.6 °C warmer than the Greece median for August (25.6 °C).
Across the year the sea averages 20.2 °C, warmer than 63% of the coastal beaches in the atlas.
December is the wettest month (86 mm) and August the driest (11 mm); the yearly total is about 530 mm.
Daylight runs from 9.6 hours in December to 14.7 hours in June; in mid-June the sun rises at 06:06 and sets at 20:50 local time.
Orientation, sun and shore
The shore faces west-south-west (255°). Open water fills about 33% of the horizon close by, which makes it an open stretch of shore.
The sun sets over the sea in every month; in mid-June it goes down at 20:50 local time on a bearing of 301°.
The opposite shore is only about 5.0 km away to the west-south-west, which keeps the water sheltered from big waves. The beach is on an island of about 21,359 km².
About 1 km offshore the sea is roughly 22 m deep and 33 m at 3 km. Behind the beach the ground is about 47 m above sea level 500 m inland and 146 m at 1.5 km.
Within 1 km, the land is 56% grassland, 36% shrubland and 5% tree cover (satellite land-cover map, 2021): a largely natural setting. Water makes up 44% of that circle.
- Grass 56%
- Shrub 36%
- Tree 5%
Land cover: ESA WorldCover 2021 (10 m). Orientation from OpenStreetMap land polygons sampled in 36 directions; depths and heights from the GEBCO 2020 grid (about 450 m cells), indicative only.
Bathing water quality
The official EU bathing-water site “Karathonas”, 200 m from the beach centre, was rated Excellent for the 2025 season. It was Excellent in 11 of its 11 classified seasons since 2015.
- 2015Excellent
- 2016Excellent
- 2017Excellent
- 2018Excellent
- 2019Excellent
- 2020Excellent
- 2021Excellent
- 2022Excellent
- 2023Excellent
- 2024Excellent
- 2025Excellent
Source: European Environment Agency, EU Bathing Water Directive assessments · national site profile. Classes are based on four seasons of bacteriological sampling.
The beach is tagged as supervised.
Photos
From above
Facilities within 1 km
- 8Restaurants, cafés & bars
- 1Public toilets
- –Showers
- 1Drinking water
- 3Car parks
- –Lifeguard stations
- 1Hotels & guesthouses
Food and drink mapped within 1 km: 1 restaurant, 1 café and 6 bars. Accommodation: 1 hotel or guesthouse.
Counted within 1 km of the beach (bus stops 1.5 km) from OpenStreetMap features and Overture Maps places, release of 2026-10. Unmapped does not mean absent.
Around the beach
Islands in view
- Ποντικονήσι 770 m SW
Getting there
| Airport | Code | Distance | Direction |
|---|---|---|---|
| Kalamata Airport Kalamata | KLX | 87.8 km | south-west |
| Athens Eleftherios Venizelos International Airport Spata-Artemida | ATH | 108 km | north-east |
| Patras Araxos Agamemnon Airport Patras | GPA | 140 km | north-west |
Straight-line distances from the beach; road distance is usually 20–40% longer.
Local transport: 3 mapped car parks within 1 km.
8 towns and villages of 1,000+ people lie within 10 km (about 31.5K residents); within 30 km there are 19 (about 74.1K).
Reference
Karathona Beach has an article on the FR Wikipedia: Karathóna.
Wikidata item Q53632512 · classified as recreation area and tourist destination.
When people look it up
The FR Wikipedia article was read 211 times in the 12 months to August 2026. Interest peaks in August (32 views), 4.0× the quietest month.
Map
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Data on this page
- Air temperature, rain, cloud, wind, humidity: NASA POWER climatology 2001–2020, 0.5° grid.
- Sea temperature: NOAA OISST v2.1 monthly normals 1991–2020, nearest ocean cell 19.1 km away.
- Beach outline, surface, rules and public facilities: OpenStreetMap contributors (ODbL), feature w235601338; restaurants, cafés, bars and lodging: Overture Maps places (CDLA-Permissive-2.0).
- Water body, status and length: Wikidata (CC0).
- Towns and time zone: GeoNames (CC BY 4.0). Airports: OurAirports (public domain). Sunrise and sunset: NOAA solar equations.
- Photos: Wikimedia Commons, author and licence under each image.
- Satellite view: Copernicus Sentinel-2 (ESA), scene S2B_34SFG_20250830_0_L2A.
- Orientation: OpenStreetMap land polygons (ODbL). Depth and terrain: GEBCO 2020 grid.
- Bathing-water quality: European Environment Agency (site ELBW039236076101).
- Settlements: GeoNames places with 1,000+ inhabitants.
- Land cover: ESA WorldCover 2021, 10 m (CC BY 4.0).
- Search popularity: about 390 Google searches a month for the name (KeywordTool, October 2026).
Data compiled 2026-10-13. Something wrong? Report a data error.