INSTRUMENT / SEA TEMPERATURE
Fernando de Noronha Water Temperature
Updated Fri 14:00 (America/Noronha)
Brazil · Forecast updated Nov 6, 2026, 14:00 UTC
Current Sea Temperature
27.7°C
81.9°F
Warm water
Valid Nov 6, 2026, 14:00 (America/Noronha). Source: stored Open-Meteo marine forecast. Temperature is not a safety rating or snorkel score.
Versus this month's average
0.3°C above
The typical November average is 27.4°C (81.3°F) from the historical baseline.
Recent trend
Holding fairly steady
Seven-day average: 27.5°C, versus 27.2°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 27.2°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 2022–2025. 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 | 27.5°C / 81.5°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 2022–2025 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.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: December 27.5°C · February 28.6°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.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: January 28.1°C · March 29.1°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.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: February 28.6°C · April 29.5°C.
Explore Fernando de Noronha sea temperature in March, including swim comfort and month comparisons →
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.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: March 29.1°C · May 28.9°C.
Explore Fernando de Noronha sea temperature in April, including swim comfort and month comparisons →
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.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: April 29.5°C · June 28.2°C.
Explore Fernando de Noronha sea temperature in May, including swim comfort and month comparisons →
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.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: May 28.9°C · July 27.4°C.
Explore Fernando de Noronha sea temperature in June, including swim comfort and month comparisons →
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.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: June 28.2°C · August 27.0°C.
Explore Fernando de Noronha sea temperature in July, including swim comfort and month comparisons →
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.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: July 27.4°C · September 26.8°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.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: August 27.0°C · October 27.1°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.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: September 26.8°C · November 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.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: October 27.1°C · December 27.5°C.
Fernando de Noronha in December
Typical December water temperature near Fernando de Noronha is 27.5°C (81.5°F), with yearly monthly means from 27.2–27.9°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: November 27.4°C · January 28.1°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 / 80.3°F | 27.2°C / 81.0°F |
| October | 26.8°C / 80.2°F | 27.1°C / 80.7°F | 27.6°C / 81.7°F |
| November | 27.3°C / 81.1°F | 27.5°C / 81.6°F | 27.9°C / 82.2°F |
Partial coverage: 6 calendar months with records. Profile calculated from 3815 hourly forecast records across 6 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 27.7°C (81.9°F). Over the last 30 days, the average has been 27.2°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 2022–2025 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 27.7°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 →