Esperance Water Temperature
Updated Sun 10:48 (Australia/Brisbane)
Australia · Forecast updated Sep 27, 2026, 10:48 UTC
Current Sea Temperature
17.3°C
63.1°F
Cold water
Valid Sep 27, 2026, 10:48 (Australia/Brisbane). Source: stored Open-Meteo marine forecast. Temperature is not a safety rating or snorkel score.
Versus this month's average
0.6°C above
The typical September average is 16.7°C (62.1°F) from the historical baseline.
Recent trend
Warming by 0.3°C
Seven-day average: 17.5°C, versus 17.2°C in the prior seven days.
What to wear
Cold water
Use a full 3-5 mm wetsuit and keep the session within your cold-water experience.
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 Esperance, typical monthly averages range from about 16.4°C (61.5°F) in August to 20.5°C (68.9°F) in March.
Over the past 30 days, the average sea temperature in Esperance has been 17.1°C.
Historical baseline (full year)
Southern Hemisphere. Summer is generally December–February; winter is June–August.
Typical monthly sea-surface temperature near Esperance, calculated from hourly observations for 2023–2025. This is not this site's forecast archive.
| Month | Typical range | Average |
|---|---|---|
| January | 17.8–21.2°C | 19.6°C / 67.3°F |
| February | 19.5–20.6°C | 20.0°C / 68.0°F |
| March | 19.0–21.7°C | 20.5°C / 68.9°F |
| April | 18.2–21.0°C | 19.7°C / 67.5°F |
| May | 17.8–19.9°C | 18.8°C / 65.8°F |
| June | 17.3–18.9°C | 18.2°C / 64.8°F |
| July | 16.2–17.4°C | 17.0°C / 62.6°F |
| August | 16.0–16.9°C | 16.4°C / 61.5°F |
| September | 16.2–17.0°C | 16.7°C / 62.1°F |
| October | 17.7–17.8°C | 17.7°C / 63.9°F |
| November | 18.0–18.7°C | 18.4°C / 65.1°F |
| December | 18.5–19.9°C | 19.4°C / 66.9°F |
Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature dataset. Nearest sea grid cell (-33.88, 121.88). 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 2023–2025 baseline. The range is the lowest and highest yearly monthly mean, not an hourly extreme.
Esperance in January
Typical January water temperature near Esperance is 19.6°C (67.3°F), with yearly monthly means from 17.8–21.2°C.
Esperance in February
Typical February water temperature near Esperance is 20.0°C (68.0°F), with yearly monthly means from 19.5–20.6°C.
Esperance in March
Typical March water temperature near Esperance is 20.5°C (68.9°F), with yearly monthly means from 19.0–21.7°C.
Esperance in April
Typical April water temperature near Esperance is 19.7°C (67.5°F), with yearly monthly means from 18.2–21.0°C.
Esperance in May
Typical May water temperature near Esperance is 18.8°C (65.8°F), with yearly monthly means from 17.8–19.9°C.
Esperance in June
Typical June water temperature near Esperance is 18.2°C (64.8°F), with yearly monthly means from 17.3–18.9°C.
Esperance in July
Typical July water temperature near Esperance is 17.0°C (62.6°F), with yearly monthly means from 16.2–17.4°C.
Esperance in August
Typical August water temperature near Esperance is 16.4°C (61.5°F), with yearly monthly means from 16.0–16.9°C.
Esperance in September
Typical September water temperature near Esperance is 16.7°C (62.1°F), with yearly monthly means from 16.2–17.0°C.
Esperance in October
Typical October water temperature near Esperance is 17.7°C (63.9°F), with yearly monthly means from 17.7–17.8°C.
Esperance in November
Typical November water temperature near Esperance is 18.4°C (65.1°F), with yearly monthly means from 18.0–18.7°C.
Esperance in December
Typical December water temperature near Esperance is 19.4°C (66.9°F), with yearly monthly means from 18.5–19.9°C.
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 |
|---|---|---|---|
| August | 16.5°C / 61.7°F | 16.8°C / 62.2°F | 17.3°C / 63.1°F |
| September | 16.6°C / 61.9°F | 17.1°C / 62.9°F | 18.4°C / 65.1°F |
Partial coverage: 2 calendar months with records. Profile calculated from 1195 hourly forecast records across 2 monthly periods. This is a growing archive, not a long-term climate normal.
About the water at Esperance
Southern coast beaches and granite islands with clear, cool-water snorkeling.
- Area
- Western Australia
Esperance Water Temperature: Common Questions
What is the water temperature in Esperance today?
The current sea surface temperature near Esperance is 17.3°C (63.1°F). Over the last 30 days, the average has been 17.1°C.
When is the water warmest in Esperance?
The water is typically warmest in March, at around 20.5°C (68.9°F) in the 2023–2025 historical baseline.
When is the water coldest in Esperance?
The water is typically coldest in August, at around 16.4°C (61.5°F) in the same historical baseline. A wetsuit is usually recommended during this period.
Can you swim in Esperance today?
The water is 17.3°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 Esperance.
View Snorkel Forecast →