Ko Phi Phi Don, Krabi, Thailand – Tonsai and Loh Dalum bays, limestone cliffs and palms from the viewpoint
Thailand · Phi Phi

Ko Phi Phi Don Sea Temperature Today

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Above ⁦28°C⁩

The sea temperature at Ko Phi Phi Don today is 29.2 °C / 85 °F – water as warm as a bath. The usual October average is 29.6 °C / 85 °F. The forecast for the next 3 days is 29.2 to 29.6 °C. Over the last 30 days the sea has cooled from 30.2 °C to 29.2 °C. Swimmable all year – the sea averages 28 °C or more in every month. Source: Sea Temp Map (seatempmap.com) – NASA MUR satellite data and the Copernicus Marine sea forecast.

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Climate · monthly averages

Sea temperature by month

5-year averages (2021–2025). Min/Max are typical daily lows and highs, not record extremes.

Warmest in May (30.8°C). Coldest in January (28.6°C). Swimmable all year – the sea averages 28 °C or more in every month.

Ko Phi Phi Don, Krabi, Thailand

The sea temperature at Ko Phi Phi Don today is 29.2 °C (85 °F) – water as warm as a bath. The usual October average is 29.6 °C. The forecast for the next 3 days is 29.2 to 29.6 °C. Over the last 30 days the sea has cooled from 30.2 °C to 29.2 °C. Swimmable all year – the sea averages 28 °C or more in every month. Source: Sea Temp Map (seatempmap.com) – NASA MUR satellite data and the Copernicus Marine sea forecast.


Sea temperature by month – Ko Phi Phi Don
MonthMinAvgMax
January28.5°C / 83.2°F28.6°C / 83.5°F28.7°C / 83.7°F
February28.8°C / 83.8°F29.1°C / 84.3°F29.4°C / 85.0°F
March29.2°C / 84.5°F29.6°C / 85.3°F29.9°C / 85.7°F
April30.2°C / 86.4°F30.5°C / 87.0°F31.0°C / 87.9°F
May30.5°C / 86.8°F30.8°C / 87.4°F31.4°C / 88.5°F
June29.8°C / 85.6°F30.2°C / 86.4°F30.7°C / 87.2°F
July29.8°C / 85.6°F29.9°C / 85.9°F30.1°C / 86.2°F
August29.6°C / 85.2°F30.0°C / 85.9°F30.4°C / 86.7°F
September29.3°C / 84.8°F29.5°C / 85.1°F29.6°C / 85.3°F
October29.1°C / 84.4°F29.6°C / 85.2°F29.9°C / 85.8°F
November29.0°C / 84.2°F29.4°C / 85.0°F29.8°C / 85.6°F
December28.7°C / 83.7°F28.9°C / 84.0°F29.1°C / 84.4°F

Air temperature by month – Ko Phi Phi Don
MonthMinAvgMax
January26.1°C / 79.0°F27.2°C / 80.9°F28.6°C / 83.4°F
February26.6°C / 79.8°F27.7°C / 81.8°F28.8°C / 83.9°F
March27.2°C / 81.0°F28.2°C / 82.7°F29.1°C / 84.3°F
April27.8°C / 82.0°F28.5°C / 83.2°F29.0°C / 84.2°F
May28.1°C / 82.5°F28.7°C / 83.6°F29.0°C / 84.2°F
June27.9°C / 82.2°F28.4°C / 83.1°F28.6°C / 83.6°F
July27.9°C / 82.3°F28.3°C / 83.0°F28.5°C / 83.3°F
August27.5°C / 81.4°F27.9°C / 82.3°F28.1°C / 82.6°F
September27.3°C / 81.1°F27.7°C / 81.8°F27.9°C / 82.1°F
October26.9°C / 80.3°F27.4°C / 81.3°F27.8°C / 82.1°F
November26.4°C / 79.6°F27.1°C / 80.8°F27.7°C / 81.8°F
December26.2°C / 79.1°F27.1°C / 80.8°F28.3°C / 82.9°F

5-year averages (2021–2025). Min/Max are typical daily lows and highs, not record extremes. (Copernicus ERA5)

Ko Phi Phi Don holidays

Rising from the Andaman Sea between Phuket and Krabi, Ko Phi Phi Don is the main island of Thailand's Phi Phi archipelago and the one where visitors stay. Its two curving bays, Ton Sai and Loh Dalum, sit back to back on either side of a narrow sandy isthmus, and visitors get around on foot or by longtail boat.

Beaches

Loh Dalum, on the north side of the isthmus, is shallow and calm, and at low tide the water pulls far back across the sand; after dark its beach bars stay busy. Long Beach, a short longtail ride or a coastal walk from Ton Sai, has clearer water and a view across to Ko Phi Phi Leh. In the north of Ko Phi Phi Don, Laem Tong is a quieter beach lined with resorts. The sea temperature on this page is measured in Loh Dalum Bay, on the north side of the island's narrow middle.

Things to do

Maya Bay, on neighbouring Ko Phi Phi Leh a few kilometres to the south, became famous as a location for the film The Beach (2000); swimming in the bay is restricted, visitors normally land at Loh Samah Bay on the other side of Ko Phi Phi Leh, and the national park closes Maya Bay seasonally so that the reef can recover. Boat trips also take in Pileh Lagoon, the Viking Cave and the snorkelling spots around Bamboo Island to the north-east. On Ko Phi Phi Don itself, a steep path from Ton Sai village climbs to the viewpoints above the twin bays.

Weather and best time to visit

At Ko Phi Phi Don the sea stays above 28 °C / 82 °F all year, even in the coolest month.

Ko Phi Phi Don has a tropical monsoon climate. The main visitor season, roughly November to April, has less rain and generally calmer seas for boat trips, though conditions still vary. From May to October the south-west monsoon brings more rain and rougher seas on the Andaman coast, and boat trips can be cancelled on stormy days. Days are hot and humid all year.

Hotels and where to stay

Most guesthouses, bars and dive shops on Ko Phi Phi Don are packed into Ton Sai village on the isthmus, which is lively and can be noisy at night. Resorts on Long Beach, Loh Ba Kao and Laem Tong are quieter and are usually reached by boat.

Signature hotels: SAii Phi Phi Island Village (Loh Ba Kao)

Airport and getting there

Ko Phi Phi Don has no airport. Ferries run from Rassada Pier in Phuket and from Krabi and Ao Nang, taking roughly 1.5 to 2 hours, and speedboats are faster. The nearest airports are Phuket (HKT) and Krabi (KBV), each a road transfer from its ferry pier. Ton Sai Bay has the main arrival pier, though some resort transfers land elsewhere on Ko Phi Phi Don.

Frequently asked questions

Is the sea at Ko Phi Phi Don warm enough for swimming today?

Today, October 29, the sea at Ko Phi Phi Don is 29.2 °C (85 °F) – water as warm as a bath. The usual October average is 29.6 °C / 85 °F.

What is a good sea temperature for swimming?

No single number works for everyone, so the scale on this page is only a guide to how the water feels: below 13 °C / 55 °F only for cold-water swimmers, 13–18 °C / 55–64 °F icy, 18–23 °C / 64–73 °F cold to refreshing, 23–28 °C / 73–82 °F refreshing to pleasantly warm and above 28 °C / 82 °F as warm as a bath. Right now the sea at Ko Phi Phi Don is 29.2 °C / 85 °F.

Can you swim at Ko Phi Phi Don in January?

Yes – the sea at Ko Phi Phi Don (Phi Phi, Thailand) stays swimmable all year. January is the coolest month, averaging 28.6 °C / 83 °F – water as warm as a bath.

When is the sea warmest at Ko Phi Phi Don?

In May, at 30.8 °C / 87 °F on average. The coolest month is January at 28.6 °C / 83 °F – still above the 18 °C / 64 °F swimming line, so there is no off-season for swimming.