Indonesia · Nusa Penida
Diamond Beach
Sea
27.3°C81.1°F
Air
UV
Beach day
⁦23–28°C⁩

Last updated ·

Today, September 13, the sea temperature at Diamond Beach is 27.3 °C (81 °F). That matches the usual average of 27.5 °C in September. Comfortable for swimming year-round.

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 December (29.1°C). Coldest in August (27.3°C). Comfortable for swimming year-round.

5-year averages (2021–2025). Min/Max are typical daily lows and highs, not record extremes.
MonthSea · MinSea · AvgSea · MaxAir · MinAir · AvgAir · Max
January28.4°C28.8°C29.3°C26.5°C27.0°C27.3°C
February28.4°C28.8°C29.4°C26.6°C27.0°C27.4°C
March28.6°C28.9°C29.4°C26.7°C27.3°C27.6°C
April28.8°C29.1°C29.5°C26.9°C27.4°C27.8°C
May28.5°C28.9°C29.3°C26.9°C27.4°C27.9°C
June27.9°C28.4°C28.8°C26.4°C26.9°C27.3°C
July27.5°C27.7°C27.9°C25.8°C26.3°C26.6°C
August26.9°C27.3°C27.6°C25.6°C26.0°C26.4°C
September26.9°C27.5°C27.8°C25.8°C26.3°C26.6°C
October27.7°C28.2°C28.7°C26.4°C26.8°C27.1°C
November28.8°C29.1°C29.4°C26.7°C27.2°C27.6°C
December29.0°C29.1°C29.3°C26.7°C27.2°C27.6°C

About Diamond Beach

On the south-east corner of Nusa Penida, Diamond Beach takes its name from a triangular limestone pinnacle that rises from the white sand at the centre of the cove, reached by a steep stone staircase carved into a 100-metre cliff. The neighbouring Atuh Beach shares the same clifftop carpark and frames a small offshore islet, while Kelingking Beach further west sits below the island's T-rex-shaped headland. Sea temperatures hold between 27 and 29 °C81 and 84 °F year-round, with the calmest swimming window from May to October.

Frequently asked questions

Today, September 13, the sea at Diamond Beach is 27.3 °C (81 °F)81 °F (27.3 °C) – ideal for swimming for most people. The usual September average is 27.5 °C82 °F.

No single number works for everyone, so the scale on this page is only a guide to how the water feels: below 13 °C55 °F icy, 13–18 °C55–64 °F cold, 18–23 °C64–73 °F refreshing, 23–28 °C73–82 °F pleasantly warm and above 28 °C82 °F like a bath. Right now the sea at Diamond Beach is 27.3 °C81 °F.

Yes – the sea at Diamond Beach (Nusa Penida, Indonesia) stays swimmable all year. August is the coolest month, averaging 27.3 °C81 °F – ideal for swimming for most people; the warmest is December at 29.2 °C85 °F.

In December, at 29.2 °C85 °F on average. The coolest month is August at 27.3 °C81 °F – still above the 18 °C64 °F swimming line, so there is no off-season for swimming.