INSTRUMENT / SEA TEMPERATURE
Porto Santo Water Temperature
Updated Fri 20:18 (Atlantic/Madeira)
Portugal · Forecast updated Nov 6, 2026, 20:18 UTC
Current Sea Temperature
22.4°C
72.3°F
Mild water
Valid Nov 6, 2026, 20:18 (Atlantic/Madeira). 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 November average is 22.5°C (72.5°F) from the historical baseline.
Recent trend
Holding fairly steady
Seven-day average: 22.5°C, versus 22.5°C in the prior seven days.
What to wear
Mild water
A rash guard is useful; cold-sensitive snorkelers may prefer a shorty wetsuit.
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 Porto Santo, typical monthly averages range from about 18.8°C (65.8°F) in March to 23.9°C (75.0°F) in August.
Over the past 30 days, the average sea temperature in Porto Santo has been 22.8°C.
Historical baseline (full year)
Northern Hemisphere. Summer is generally June–August; winter is December–February.
Typical monthly sea-surface temperature near Porto Santo, calculated from hourly observations for 2022–2025. This is not this site's forecast archive.
| Month | Typical range | Average |
|---|---|---|
| January | 19.6–20.7°C | 20.0°C / 68.0°F |
| February | 18.2–19.7°C | 19.0°C / 66.2°F |
| March | 18.3–19.0°C | 18.8°C / 65.8°F |
| April | 18.5–19.6°C | 19.2°C / 66.6°F |
| May | 19.5–20.4°C | 20.0°C / 68.0°F |
| June | 20.8–21.8°C | 21.3°C / 70.3°F |
| July | 22.5–23.2°C | 22.9°C / 73.2°F |
| August | 23.4–24.3°C | 23.9°C / 75.0°F |
| September | 23.5–24.4°C | 23.9°C / 75.0°F |
| October | 23.0–24.4°C | 23.7°C / 74.7°F |
| November | 22.1–23.0°C | 22.5°C / 72.5°F |
| December | 20.1–21.7°C | 20.9°C / 69.6°F |
Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature dataset. Nearest sea grid cell (33.04, -16.37). 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.
Porto Santo in January
Typical January water temperature near Porto Santo is 20.0°C (68.0°F), with yearly monthly means from 19.6–20.7°C.
Swimming and snorkeling: cool water. A 3 mm shorty or full wetsuit will make longer snorkels more comfortable.
Adjacent months: December 20.9°C · February 19.0°C.
Explore Porto Santo sea temperature in January, including swim comfort and month comparisons →
Porto Santo in February
Typical February water temperature near Porto Santo is 19.0°C (66.2°F), with yearly monthly means from 18.2–19.7°C.
Swimming and snorkeling: cool water. A 3 mm shorty or full wetsuit will make longer snorkels more comfortable.
Adjacent months: January 20.0°C · March 18.8°C.
Explore Porto Santo sea temperature in February, including swim comfort and month comparisons →
Porto Santo in March
Typical March water temperature near Porto Santo is 18.8°C (65.8°F), with yearly monthly means from 18.3–19.0°C.
Swimming and snorkeling: cool water. A 3 mm shorty or full wetsuit will make longer snorkels more comfortable.
Adjacent months: February 19.0°C · April 19.2°C.
Explore Porto Santo sea temperature in March, including swim comfort and month comparisons →
Porto Santo in April
Typical April water temperature near Porto Santo is 19.2°C (66.6°F), with yearly monthly means from 18.5–19.6°C.
Swimming and snorkeling: cool water. A 3 mm shorty or full wetsuit will make longer snorkels more comfortable.
Adjacent months: March 18.8°C · May 20.0°C.
Explore Porto Santo sea temperature in April, including swim comfort and month comparisons →
Porto Santo in May
Typical May water temperature near Porto Santo is 20.0°C (68.0°F), with yearly monthly means from 19.5–20.4°C.
Swimming and snorkeling: cool water. A 3 mm shorty or full wetsuit will make longer snorkels more comfortable.
Adjacent months: April 19.2°C · June 21.3°C.
Explore Porto Santo sea temperature in May, including swim comfort and month comparisons →
Porto Santo in June
Typical June water temperature near Porto Santo is 21.3°C (70.3°F), with yearly monthly means from 20.8–21.8°C.
Swimming and snorkeling: cool water. A 3 mm shorty or full wetsuit will make longer snorkels more comfortable.
Adjacent months: May 20.0°C · July 22.9°C.
Explore Porto Santo sea temperature in June, including swim comfort and month comparisons →
Porto Santo in July
Typical July water temperature near Porto Santo is 22.9°C (73.2°F), with yearly monthly means from 22.5–23.2°C.
Swimming and snorkeling: mild water. A rash guard is useful; cold-sensitive snorkelers may prefer a shorty wetsuit.
Adjacent months: June 21.3°C · August 23.9°C.
Explore Porto Santo sea temperature in July, including swim comfort and month comparisons →
Porto Santo in August
Typical August water temperature near Porto Santo is 23.9°C (75.0°F), with yearly monthly means from 23.4–24.3°C.
Swimming and snorkeling: mild water. A rash guard is useful; cold-sensitive snorkelers may prefer a shorty wetsuit.
Adjacent months: July 22.9°C · September 23.9°C.
Explore Porto Santo sea temperature in August, including swim comfort and month comparisons →
Porto Santo in September
Typical September water temperature near Porto Santo is 23.9°C (75.0°F), with yearly monthly means from 23.5–24.4°C.
Swimming and snorkeling: mild water. A rash guard is useful; cold-sensitive snorkelers may prefer a shorty wetsuit.
Adjacent months: August 23.9°C · October 23.7°C.
Explore Porto Santo sea temperature in September, including swim comfort and month comparisons →
Porto Santo in October
Typical October water temperature near Porto Santo is 23.7°C (74.7°F), with yearly monthly means from 23.0–24.4°C.
Swimming and snorkeling: mild water. A rash guard is useful; cold-sensitive snorkelers may prefer a shorty wetsuit.
Adjacent months: September 23.9°C · November 22.5°C.
Explore Porto Santo sea temperature in October, including swim comfort and month comparisons →
Porto Santo in November
Typical November water temperature near Porto Santo is 22.5°C (72.5°F), with yearly monthly means from 22.1–23.0°C.
Swimming and snorkeling: mild water. A rash guard is useful; cold-sensitive snorkelers may prefer a shorty wetsuit.
Adjacent months: October 23.7°C · December 20.9°C.
Explore Porto Santo sea temperature in November, including swim comfort and month comparisons →
Porto Santo in December
Typical December water temperature near Porto Santo is 20.9°C (69.6°F), with yearly monthly means from 20.1–21.7°C.
Swimming and snorkeling: cool water. A 3 mm shorty or full wetsuit will make longer snorkels more comfortable.
Adjacent months: November 22.5°C · January 20.0°C.
Explore Porto Santo 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 | 19.6°C / 67.3°F | 20.9°C / 69.6°F | 22.7°C / 72.9°F |
| July | 21.6°C / 70.9°F | 22.9°C / 73.3°F | 24.0°C / 75.2°F |
| August | 23.1°C / 73.6°F | 24.5°C / 76.1°F | 25.4°C / 77.7°F |
| September | 23.8°C / 74.8°F | 24.3°C / 75.8°F | 25.3°C / 77.5°F |
| October | 22.3°C / 72.1°F | 23.1°C / 73.5°F | 24.2°C / 75.6°F |
| November | 22.1°C / 71.8°F | 22.4°C / 72.3°F | 22.8°C / 73.0°F |
Partial coverage: 6 calendar months with records. Profile calculated from 3820 hourly forecast records across 6 monthly periods. This is a growing archive, not a long-term climate normal.
About the water at Porto Santo
Golden-sand island near Madeira with calm, clear Atlantic shallows.
- Area
- Madeira
Porto Santo Water Temperature: Common Questions
What is the water temperature in Porto Santo today?
The current sea surface temperature near Porto Santo is 22.4°C (72.3°F). Over the last 30 days, the average has been 22.8°C.
When is the water warmest in Porto Santo?
The water is typically warmest in August, at around 23.9°C (75.0°F) in the 2022–2025 historical baseline.
When is the water coldest in Porto Santo?
The water is typically coldest in March, at around 18.8°C (65.8°F) in the same historical baseline. A wetsuit is usually recommended during this period.
Can you swim in Porto Santo today?
At 22.4°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 Porto Santo.
View Snorkel Forecast →