Month-specific sea-surface temperature · New Zealand

Abel Tasman Sea Temperature in April

17.6°C

63.7°F

In April, sea-surface temperature near Abel Tasman has a historical monthly average of 17.6°C. This is not the reading for any particular holiday date.

Across 2023–2025, the lowest and highest yearly April monthly means were 16.8–18.1°C. These are not daily extremes.

Previous month

March · 19.2°C

Change into April: -1.6°C

Next month

May · 15.6°C

Change into next month: -2.0°C

Can you swim or snorkel in Abel Tasman in April?

At 17.6°C our temperature-only guide describes the water as cold 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?

Use a full 3-5 mm wetsuit and keep the session within your cold-water experience.

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 April. Check again close to your trip.

Waves and wind: recorded-model conditions for April

These figures come from a separately modelled, date-specific wind/wave backfill, not the NOAA SST series. A single observed season is not a climatological likelihood or a guarantee of safe conditions.

Compare nearby coasts with their own evidence

Coast	Morning	Afternoon	Period
Goat Island	13%	13%	Apr 2026

A “calm hour” meets fixed modelled wave/wind thresholds; neither visibility nor local currents, entry conditions or actual beach safety is measured here. Periods may differ by coast.

Abel Tasman 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 19.6°C February 20.2°C March 19.2°C April 17.6°C May 15.6°C June 13.9°C July 12.5°C August 11.8°C September 13.0°C October 14.5°C November 16.4°C December 18.2°C

Data source and limitations

Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature; 2023–2025. Marine model grid near -40.88, 173.00. Based on 3 yearly monthly means and 2160 recorded samples. Source methodology.

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