INSTRUMENT / SEA TEMPERATURE
Goat Island Water Temperature
Updated Sat 14:56 (Pacific/Auckland)
New Zealand · Forecast updated Nov 7, 2026, 14:56 UTC
Current Sea Temperature
18.0°C
64.4°F
Cool water
Valid Nov 7, 2026, 14:56 (Pacific/Auckland). Source: stored Open-Meteo marine forecast. Temperature is not a safety rating or snorkel score.
Versus this month's average
0.8°C below
The typical November average is 18.8°C (65.8°F) from the historical baseline.
Recent trend
Holding fairly steady
Seven-day average: 17.4°C, versus 17.4°C in the prior seven days.
What to wear
Cool water
A 3 mm shorty or full wetsuit will make longer snorkels more comfortable.
Cold tolerance varies. Wind, session length, sunshine, and exertion also affect comfort; temperature alone does not describe sea conditions or replace the snorkel forecast.
Typical Sea Temperature Over the Year
In the historical baseline for Goat Island, typical monthly averages range from about 13.8°C (56.8°F) in August to 22.4°C (72.3°F) in February.
Over the past 30 days, the average sea temperature in Goat Island has been 17.2°C.
Historical baseline (full year)
Southern Hemisphere. Summer is generally December–February; winter is June–August.
Typical monthly sea-surface temperature near Goat Island, calculated from hourly observations for 2022–2025. This is not this site's forecast archive.
| Month | Typical range | Average |
|---|---|---|
| January | 21.0–22.9°C | 21.9°C / 71.4°F |
| February | 22.0–22.8°C | 22.4°C / 72.3°F |
| March | 20.7–22.0°C | 21.4°C / 70.5°F |
| April | 19.0–20.4°C | 19.7°C / 67.5°F |
| May | 16.8–18.5°C | 17.7°C / 63.9°F |
| June | 15.5–16.6°C | 16.0°C / 60.8°F |
| July | 14.2–15.5°C | 14.7°C / 58.5°F |
| August | 13.4–14.1°C | 13.8°C / 56.8°F |
| September | 14.8–15.2°C | 15.0°C / 59.0°F |
| October | 16.1–16.8°C | 16.4°C / 61.5°F |
| November | 18.3–19.8°C | 18.8°C / 65.8°F |
| December | 20.0–21.3°C | 20.8°C / 69.4°F |
Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature dataset. Nearest sea grid cell (-36.29, 174.88). Each month is the mean of yearly monthly means; the range is the lowest and highest of those yearly monthly means. Open-Meteo methodology.
Water temperature by month
Each month uses the 2022–2025 baseline. The range is the lowest and highest yearly monthly mean, not an hourly extreme.
Goat Island in January
Typical January water temperature near Goat Island is 21.9°C (71.4°F), with yearly monthly means from 21.0–22.9°C.
Swimming and snorkeling: cool water. A 3 mm shorty or full wetsuit will make longer snorkels more comfortable.
Adjacent months: December 20.8°C · February 22.4°C.
Explore Goat Island sea temperature in January, including swim comfort and month comparisons →
Goat Island in February
Typical February water temperature near Goat Island is 22.4°C (72.3°F), with yearly monthly means from 22.0–22.8°C.
Swimming and snorkeling: mild water. A rash guard is useful; cold-sensitive snorkelers may prefer a shorty wetsuit.
Adjacent months: January 21.9°C · March 21.4°C.
Explore Goat Island sea temperature in February, including swim comfort and month comparisons →
Goat Island in March
Typical March water temperature near Goat Island is 21.4°C (70.5°F), with yearly monthly means from 20.7–22.0°C.
Swimming and snorkeling: cool water. A 3 mm shorty or full wetsuit will make longer snorkels more comfortable.
Adjacent months: February 22.4°C · April 19.7°C.
Explore Goat Island sea temperature in March, including swim comfort and month comparisons →
Goat Island in April
Typical April water temperature near Goat Island is 19.7°C (67.5°F), with yearly monthly means from 19.0–20.4°C.
Swimming and snorkeling: cool water. A 3 mm shorty or full wetsuit will make longer snorkels more comfortable.
Adjacent months: March 21.4°C · May 17.7°C.
Explore Goat Island sea temperature in April, including swim comfort and month comparisons →
Goat Island in May
Typical May water temperature near Goat Island is 17.7°C (63.9°F), with yearly monthly means from 16.8–18.5°C.
Swimming and snorkeling: cold water. Use a full 3-5 mm wetsuit and keep the session within your cold-water experience.
Adjacent months: April 19.7°C · June 16.0°C.
Explore Goat Island sea temperature in May, including swim comfort and month comparisons →
Goat Island in June
Typical June water temperature near Goat Island is 16.0°C (60.8°F), with yearly monthly means from 15.5–16.6°C.
Swimming and snorkeling: cold water. Use a full 3-5 mm wetsuit and keep the session within your cold-water experience.
Adjacent months: May 17.7°C · July 14.7°C.
Explore Goat Island sea temperature in June, including swim comfort and month comparisons →
Goat Island in July
Typical July water temperature near Goat Island is 14.7°C (58.5°F), with yearly monthly means from 14.2–15.5°C.
Swimming and snorkeling: cold water. Use a full 3-5 mm wetsuit and keep the session within your cold-water experience.
Adjacent months: June 16.0°C · August 13.8°C.
Explore Goat Island sea temperature in July, including swim comfort and month comparisons →
Goat Island in August
Typical August water temperature near Goat Island is 13.8°C (56.8°F), with yearly monthly means from 13.4–14.1°C.
Swimming and snorkeling: cold water. Use a full 3-5 mm wetsuit and keep the session within your cold-water experience.
Adjacent months: July 14.7°C · September 15.0°C.
Explore Goat Island sea temperature in August, including swim comfort and month comparisons →
Goat Island in September
Typical September water temperature near Goat Island is 15.0°C (59.0°F), with yearly monthly means from 14.8–15.2°C.
Swimming and snorkeling: cold water. Use a full 3-5 mm wetsuit and keep the session within your cold-water experience.
Adjacent months: August 13.8°C · October 16.4°C.
Explore Goat Island sea temperature in September, including swim comfort and month comparisons →
Goat Island in October
Typical October water temperature near Goat Island is 16.4°C (61.5°F), with yearly monthly means from 16.1–16.8°C.
Swimming and snorkeling: cold water. Use a full 3-5 mm wetsuit and keep the session within your cold-water experience.
Adjacent months: September 15.0°C · November 18.8°C.
Explore Goat Island sea temperature in October, including swim comfort and month comparisons →
Goat Island in November
Typical November water temperature near Goat Island is 18.8°C (65.8°F), with yearly monthly means from 18.3–19.8°C.
Swimming and snorkeling: cool water. A 3 mm shorty or full wetsuit will make longer snorkels more comfortable.
Adjacent months: October 16.4°C · December 20.8°C.
Explore Goat Island sea temperature in November, including swim comfort and month comparisons →
Goat Island in December
Typical December water temperature near Goat Island is 20.8°C (69.4°F), with yearly monthly means from 20.0–21.3°C.
Swimming and snorkeling: cool water. A 3 mm shorty or full wetsuit will make longer snorkels more comfortable.
Adjacent months: November 18.8°C · January 21.9°C.
Explore Goat Island sea temperature in December, including swim comfort and month comparisons →
Forecast archive (growing)
These values come from hourly forecasts SnorkelForecast has stored. They cover only months with records and do not replace the historical baseline.
| Month | Min | Average | Max |
|---|---|---|---|
| June | 14.9°C / 58.8°F | 16.2°C / 61.1°F | 17.6°C / 63.7°F |
| July | 13.8°C / 56.8°F | 14.5°C / 58.1°F | 15.6°C / 60.1°F |
| August | 13.0°C / 55.4°F | 13.9°C / 56.9°F | 14.6°C / 58.3°F |
| September | 14.4°C / 57.9°F | 15.1°C / 59.2°F | 15.6°C / 60.1°F |
| October | 15.4°C / 59.7°F | 16.8°C / 62.2°F | 18.0°C / 64.4°F |
| November | 16.7°C / 62.1°F | 17.6°C / 63.6°F | 18.5°C / 65.3°F |
Partial coverage: 6 calendar months with records. Profile calculated from 3838 hourly forecast records across 6 monthly periods. This is a growing archive, not a long-term climate normal.
About the water at Goat Island
New Zealand's first marine reserve, with snapper and kelp in clear shallows.
- Area
- Auckland
Goat Island Water Temperature: Common Questions
What is the water temperature in Goat Island today?
The current sea surface temperature near Goat Island is 18.0°C (64.4°F). Over the last 30 days, the average has been 17.2°C.
When is the water warmest in Goat Island?
The water is typically warmest in February, at around 22.4°C (72.3°F) in the 2022–2025 historical baseline.
When is the water coldest in Goat Island?
The water is typically coldest in August, at around 13.8°C (56.8°F) in the same historical baseline. A wetsuit is usually recommended during this period.
Can you swim in Goat Island today?
The water is 18.0°C. It may feel cool, but a wetsuit or short swims can help.
Full Snorkeling Forecast
See how today's sea temperature, wave height, wind, and tides combine into a detailed snorkeling score for Goat Island.
View Snorkel Forecast →