INSTRUMENT / SEA TEMPERATURE
Ponza Water Temperature
Updated Mon 13:52 (Europe/Rome)
Italy · Forecast updated Nov 9, 2026, 13:52 UTC
Current Sea Temperature
20.5°C
68.9°F
Cool water
Valid Nov 9, 2026, 13:52 (Europe/Rome). 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 November average is 19.9°C (67.8°F) from the historical baseline.
Recent trend
Cooling by 1.0°C
Seven-day average: 20.8°C, versus 21.8°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 Ponza, typical monthly averages range from about 15.1°C (59.2°F) in February to 27.1°C (80.8°F) in July.
Over the past 30 days, the average sea temperature in Ponza has been 22.6°C.
Historical baseline (full year)
Northern Hemisphere. Summer is generally June–August; winter is December–February.
Typical monthly sea-surface temperature near Ponza, calculated from hourly observations for 2023–2025. This is not this site's forecast archive.
| Month | Typical range | Average |
|---|---|---|
| January | 16.0–16.5°C | 16.2°C / 61.2°F |
| February | 14.9–15.3°C | 15.1°C / 59.2°F |
| March | 14.8–15.6°C | 15.3°C / 59.5°F |
| April | 15.8–17.0°C | 16.5°C / 61.7°F |
| May | 18.8–19.9°C | 19.3°C / 66.7°F |
| June | 23.2–25.1°C | 24.1°C / 75.4°F |
| July | 26.9–27.3°C | 27.1°C / 80.8°F |
| August | 25.4–29.1°C | 27.1°C / 80.8°F |
| September | 24.4–25.5°C | 25.0°C / 77.0°F |
| October | 22.0–23.7°C | 22.6°C / 72.7°F |
| November | 19.6–20.4°C | 19.9°C / 67.8°F |
| December | 17.2–17.7°C | 17.5°C / 63.5°F |
Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature dataset. Nearest sea grid cell (40.88, 12.96). 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.
Ponza in January
Typical January water temperature near Ponza is 16.2°C (61.2°F), with yearly monthly means from 16.0–16.5°C.
Swimming and snorkeling: cold water. Use a full 3-5 mm wetsuit and keep the session within your cold-water experience.
Adjacent months: December 17.5°C · February 15.1°C.
Explore Ponza sea temperature in January, including swim comfort and month comparisons →
Ponza in February
Typical February water temperature near Ponza is 15.1°C (59.2°F), with yearly monthly means from 14.9–15.3°C.
Swimming and snorkeling: cold water. Use a full 3-5 mm wetsuit and keep the session within your cold-water experience.
Adjacent months: January 16.2°C · March 15.3°C.
Explore Ponza sea temperature in February, including swim comfort and month comparisons →
Ponza in March
Typical March water temperature near Ponza is 15.3°C (59.5°F), with yearly monthly means from 14.8–15.6°C.
Swimming and snorkeling: cold water. Use a full 3-5 mm wetsuit and keep the session within your cold-water experience.
Adjacent months: February 15.1°C · April 16.5°C.
Explore Ponza sea temperature in March, including swim comfort and month comparisons →
Ponza in April
Typical April water temperature near Ponza is 16.5°C (61.7°F), with yearly monthly means from 15.8–17.0°C.
Swimming and snorkeling: cold water. Use a full 3-5 mm wetsuit and keep the session within your cold-water experience.
Adjacent months: March 15.3°C · May 19.3°C.
Explore Ponza sea temperature in April, including swim comfort and month comparisons →
Ponza in May
Typical May water temperature near Ponza is 19.3°C (66.7°F), with yearly monthly means from 18.8–19.9°C.
Swimming and snorkeling: cool water. A 3 mm shorty or full wetsuit will make longer snorkels more comfortable.
Adjacent months: April 16.5°C · June 24.1°C.
Explore Ponza sea temperature in May, including swim comfort and month comparisons →
Ponza in June
Typical June water temperature near Ponza is 24.1°C (75.4°F), with yearly monthly means from 23.2–25.1°C.
Swimming and snorkeling: mild water. A rash guard is useful; cold-sensitive snorkelers may prefer a shorty wetsuit.
Adjacent months: May 19.3°C · July 27.1°C.
Explore Ponza sea temperature in June, including swim comfort and month comparisons →
Ponza in July
Typical July water temperature near Ponza is 27.1°C (80.8°F), with yearly monthly means from 26.9–27.3°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: June 24.1°C · August 27.1°C.
Explore Ponza sea temperature in July, including swim comfort and month comparisons →
Ponza in August
Typical August water temperature near Ponza is 27.1°C (80.8°F), with yearly monthly means from 25.4–29.1°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: July 27.1°C · September 25.0°C.
Explore Ponza sea temperature in August, including swim comfort and month comparisons →
Ponza in September
Typical September water temperature near Ponza is 25.0°C (77.0°F), with yearly monthly means from 24.4–25.5°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: August 27.1°C · October 22.6°C.
Explore Ponza sea temperature in September, including swim comfort and month comparisons →
Ponza in October
Typical October water temperature near Ponza is 22.6°C (72.7°F), with yearly monthly means from 22.0–23.7°C.
Swimming and snorkeling: mild water. A rash guard is useful; cold-sensitive snorkelers may prefer a shorty wetsuit.
Adjacent months: September 25.0°C · November 19.9°C.
Explore Ponza sea temperature in October, including swim comfort and month comparisons →
Ponza in November
Typical November water temperature near Ponza is 19.9°C (67.8°F), with yearly monthly means from 19.6–20.4°C.
Swimming and snorkeling: cool water. A 3 mm shorty or full wetsuit will make longer snorkels more comfortable.
Adjacent months: October 22.6°C · December 17.5°C.
Explore Ponza sea temperature in November, including swim comfort and month comparisons →
Ponza in December
Typical December water temperature near Ponza is 17.5°C (63.5°F), with yearly monthly means from 17.2–17.7°C.
Swimming and snorkeling: cold water. Use a full 3-5 mm wetsuit and keep the session within your cold-water experience.
Adjacent months: November 19.9°C · January 16.2°C.
Explore Ponza 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 | 22.1°C / 71.8°F | 25.0°C / 77.0°F | 29.0°C / 84.2°F |
| July | 27.0°C / 80.6°F | 28.5°C / 83.4°F | 30.4°C / 86.7°F |
| August | 28.7°C / 83.7°F | 29.5°C / 85.1°F | 30.3°C / 86.5°F |
| September | 25.7°C / 78.3°F | 27.6°C / 81.6°F | 29.3°C / 84.7°F |
| October | 21.6°C / 70.9°F | 23.9°C / 75.0°F | 26.1°C / 79.0°F |
| November | 20.4°C / 68.7°F | 20.8°C / 69.5°F | 21.6°C / 70.9°F |
Partial coverage: 6 calendar months with records. Profile calculated from 3886 hourly forecast records across 6 monthly periods. This is a growing archive, not a long-term climate normal.
About the water at Ponza
Pontine island with sea caves and clear coves popular for snorkeling.
- Area
- Lazio
Ponza Water Temperature: Common Questions
What is the water temperature in Ponza today?
The current sea surface temperature near Ponza is 20.5°C (68.9°F). Over the last 30 days, the average has been 22.6°C.
When is the water warmest in Ponza?
The water is typically warmest in July, at around 27.1°C (80.8°F) in the 2023–2025 historical baseline.
When is the water coldest in Ponza?
The water is typically coldest in February, at around 15.1°C (59.2°F) in the same historical baseline. A wetsuit is usually recommended during this period.
Can you swim in Ponza today?
At 20.5°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 Ponza.
View Snorkel Forecast →