Fernando de Noronha Water Temperature
Updated Tue 10:07 (America/Noronha)
Brazil · Forecast updated Sep 22, 2026, 10:07 UTC
Current Sea Temperature
26.8°C
80.2°F
Warm water
Valid Sep 22, 2026, 10:07 (America/Noronha). Source: stored Open-Meteo marine forecast. Temperature is not a safety rating or snorkel score.
Versus this month's average
Close to average
The typical September average is 26.8°C (80.2°F) from the historical baseline.
Recent trend
Holding fairly steady
Seven-day average: 26.9°C, versus 26.9°C in the prior seven days.
What to wear
Warm water
Most people are comfortable in swimwear or a light rash guard.
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 Fernando de Noronha, typical monthly averages range from about 26.8°C (80.2°F) in September to 29.5°C (85.1°F) in April.
Over the past 30 days, the average sea temperature in Fernando de Noronha has been 26.7°C.
Historical baseline (full year)
Southern Hemisphere. Summer is generally December–February; winter is June–August.
Typical monthly sea-surface temperature near Fernando de Noronha, calculated from hourly observations for 2023–2025. This is not this site's forecast archive.
| Month | Typical range | Average |
|---|---|---|
| January | 27.5–28.7°C | 28.1°C / 82.6°F |
| February | 28.1–29.0°C | 28.6°C / 83.5°F |
| March | 28.8–29.8°C | 29.1°C / 84.4°F |
| April | 29.2–30.2°C | 29.5°C / 85.1°F |
| May | 28.5–29.3°C | 28.9°C / 84.0°F |
| June | 27.7–28.6°C | 28.2°C / 82.8°F |
| July | 27.2–27.5°C | 27.4°C / 81.3°F |
| August | 27.0–27.1°C | 27.0°C / 80.6°F |
| September | 26.7–27.0°C | 26.8°C / 80.2°F |
| October | 26.8–27.4°C | 27.1°C / 80.8°F |
| November | 27.1–27.8°C | 27.4°C / 81.3°F |
| December | 27.2–27.9°C | 27.6°C / 81.7°F |
Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature dataset. Nearest sea grid cell (-3.88, -32.46). 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.
Fernando de Noronha in January
Typical January water temperature near Fernando de Noronha is 28.1°C (82.6°F), with yearly monthly means from 27.5–28.7°C.
Fernando de Noronha in February
Typical February water temperature near Fernando de Noronha is 28.6°C (83.5°F), with yearly monthly means from 28.1–29.0°C.
Fernando de Noronha in March
Typical March water temperature near Fernando de Noronha is 29.1°C (84.4°F), with yearly monthly means from 28.8–29.8°C.
Fernando de Noronha in April
Typical April water temperature near Fernando de Noronha is 29.5°C (85.1°F), with yearly monthly means from 29.2–30.2°C.
Fernando de Noronha in May
Typical May water temperature near Fernando de Noronha is 28.9°C (84.0°F), with yearly monthly means from 28.5–29.3°C.
Fernando de Noronha in June
Typical June water temperature near Fernando de Noronha is 28.2°C (82.8°F), with yearly monthly means from 27.7–28.6°C.
Fernando de Noronha in July
Typical July water temperature near Fernando de Noronha is 27.4°C (81.3°F), with yearly monthly means from 27.2–27.5°C.
Fernando de Noronha in August
Typical August water temperature near Fernando de Noronha is 27.0°C (80.6°F), with yearly monthly means from 27.0–27.1°C.
Fernando de Noronha in September
Typical September water temperature near Fernando de Noronha is 26.8°C (80.2°F), with yearly monthly means from 26.7–27.0°C.
Fernando de Noronha in October
Typical October water temperature near Fernando de Noronha is 27.1°C (80.8°F), with yearly monthly means from 26.8–27.4°C.
Fernando de Noronha in November
Typical November water temperature near Fernando de Noronha is 27.4°C (81.3°F), with yearly monthly means from 27.1–27.8°C.
Fernando de Noronha in December
Typical December water temperature near Fernando de Noronha is 27.6°C (81.7°F), with yearly monthly means from 27.2–27.9°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 |
|---|---|---|---|
| June | 28.1°C / 82.6°F | 28.4°C / 83.1°F | 28.9°C / 84.0°F |
| July | 26.5°C / 79.7°F | 27.4°C / 81.3°F | 28.2°C / 82.8°F |
| August | 26.4°C / 79.5°F | 26.9°C / 80.4°F | 27.5°C / 81.5°F |
| September | 26.4°C / 79.5°F | 26.8°C / 80.2°F | 27.2°C / 81.0°F |
Partial coverage: 4 calendar months with records. Profile calculated from 2731 hourly forecast records across 4 monthly periods. This is a growing archive, not a long-term climate normal.
About the water at Fernando de Noronha
Atlantic archipelago marine park with turtles, reef sharks and clear natural pools.
- Area
- Pernambuco
Fernando de Noronha Water Temperature: Common Questions
What is the water temperature in Fernando de Noronha today?
The current sea surface temperature near Fernando de Noronha is 26.8°C (80.2°F). Over the last 30 days, the average has been 26.7°C.
When is the water warmest in Fernando de Noronha?
The water is typically warmest in April, at around 29.5°C (85.1°F) in the 2023–2025 historical baseline.
When is the water coldest in Fernando de Noronha?
The water is typically coldest in September, at around 26.8°C (80.2°F) in the same historical baseline.
Can you swim in Fernando de Noronha today?
At 26.8°C, the water is usually comfortable for swimming and snorkeling.
Full Snorkeling Forecast
See how today's sea temperature, wave height, wind, and tides combine into a detailed snorkeling score for Fernando de Noronha.
View Snorkel Forecast →