Month-specific sea-surface temperature · Malaysia

Redang Island Sea Temperature in May

31.2°C

88.2°F

In May, sea-surface temperature near Redang Island has a historical monthly average of 31.2°C. This is not the reading for any particular holiday date.

Across 2023–2025, the lowest and highest yearly May monthly means were 30.9–31.4°C. These are not daily extremes.

Previous month

April · 30.3°C

Change into May: +0.9°C

Next month

June · 30.9°C

Change into next month: -0.3°C

Can you swim or snorkel in Redang Island in May?

At 31.2°C our temperature-only guide describes the water as very warm water. Comfort depends on your cold tolerance, immersion time and wind. A historical average cannot determine whether conditions are safe on any given day.

Do you need a wetsuit?

Swimwear is usually enough; a rash guard adds sun protection.

Which beach should you choose?

Look for a beach sheltered from the actual forecast waves and wind on your visit. Exposure, currents and entry conditions vary even where water temperatures are similar. Follow local warnings.

Check the current waves, wind and snorkeling forecast →

A live forecast does not predict a future May. Check again close to your trip.

Nearby places in May

Comparable historical averages from independent marine grid cells. Warmer water does not imply safe snorkeling.

Perhentian Islands 31.5°C

Redang Island Sea Temperature: All 12 Months

Choose a month for available historical evidence, month comparisons and swim guidance. Missing history is clearly marked and never presented as a long-term normal.

January 28.3°C February 28.3°C March 28.9°C April 30.3°C May 31.2°C June 30.9°C July 30.7°C August 30.8°C September 30.5°C October 30.3°C November 29.9°C December 28.6°C

Data source and limitations

Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature; 2023–2025. Marine model grid near 5.78, 103.01. Based on 3 yearly monthly means and 2232 recorded samples. Source methodology.

Modelled sea-surface temperatures do not establish underwater visibility, wildlife, calm currents or safe entry.