Isola Martana

Island Small island in Lake Bolsena, historic cemetery

Another Lake Bolsena isle reached by boat, visited for stone ruins, quiet harbours and quick photographic circuits around the lake.

Main image

Isola Martana is the smaller of the two main islands in Lake Bolsena in Lazio, Italy. It forms one of the lake’s principal insular features alongside Isola Bisentina.

The island is compact and typically visited for short walks, shoreline views, and as part of boat tours that stop at both lake islands. Facilities are minimal and visits are generally brief due to limited area and infrastructure.

The island has been associated with local settlement and defensive uses in past centuries, with its role and ownership changing over time. Specific historical structures on the island reflect those varied uses but have been modified across different eras.

It sits close to Lake Bolsena’s eastern shore near the town of Marta, about 100 km north of Rome, and is accessed by boat from nearby lakeside towns.

  • Relative size and access: Smaller than Isola Bisentina and best visited as part of a short boat trip combining both lake islands.
  • Nearest town: Located close to the town of Marta on Lake Bolsena's eastern shore; access is by private boat from nearby towns.
Isola Martana
Isola Martana, Lake Bolsena, Viterbo, Lazio, Italy
42.5492, 11.9523
Island accessible by boat; no formal visitor hours

How to Get to Isola Martana #

Access by small boat from Bolsena harbor. Most boat services that visit Bisentina will also stop at Martana on request.

Tips for Visiting Isola Martana #

  • If combining with Bisentina, depart Bolsena early to visit both islands when boat services are still running.
  • Look for the ruined walls and foundation stones that hint at the island's former monastic complex.
  • Wear shoes suitable for uneven historic stonework - many paths are narrow and irregular.

Best Time to Visit Isola Martana #

Visit in late spring or early autumn for pleasant weather and fewer day boats.

Late spring to early autumn
May-September · 15-26°C (59-79°F)
Best conditions for boat travel and shoreline walks.

Weather & Climate near Isola Martana #

Climate

Isola Martana's climate is classified as Hot-Summer Mediterranean - Hot-Summer Mediterranean climate with warm summers (peaking in August) and cold winters (coldest in January). Temperatures range from 4°C to 27°C. Semi-arid with limited rainfall.

Best Time to Visit
JulyAugustJune
Temperature & Rainfall
Temperature Range
39°
Warmest Month
-7°
Coldest Month
Monthly Conditions

January

January is the coolest month with highs of 9°C and lows of 4°C. Moderate rainfall (33 mm) and partly cloudy skies.

61 Good

Comfort

Feels Like Cold
C
Temperature
87%
Humidity
Very Humid

Weather

33 mm
Rainfall
2.2 m/s
Wind
Calm
0.2
UV Index
Low
9.3h daylight

February

February is cold with highs of 9°C and lows of 4°C. Moderate rainfall (32 mm) and partly cloudy skies.

61 Good

Comfort

Feels Like Cold
C
Temperature
83%
Humidity
Very Humid

Weather

32 mm
Rainfall
2.5 m/s
Wind
Calm
0.4
UV Index
Low
10.4h daylight

March

March is cold with highs of 12°C and lows of 5°C. Light rainfall and partly cloudy skies.

63 Good

Comfort

Feels Like Cold
C
Temperature
12°
79%
Humidity
Very Humid

Weather

28 mm
Rainfall
2.6 m/s
Wind
Calm
0.7
UV Index
Moderate
11.8h daylight

April

April is cool with highs of 15°C and lows of 7°C. Moderate rainfall (32 mm) and partly cloudy skies.

67 Good

Comfort

11°
Feels Like Cool
11°C
Temperature
15°
74%
Humidity
Very Humid

Weather

32 mm
Rainfall
2.6 m/s
Wind
Calm
1.1
UV Index
High
13.2h daylight

May

May is cool with highs of 20°C and lows of 11°C. Light rainfall and partly cloudy skies.

79 Very Good

Comfort

16°
Feels Like Cool
16°C
Temperature
11° 20°
71%
Humidity
Very Humid

Weather

29 mm
Rainfall
2.2 m/s
Wind
Calm
1.6
UV Index
Very High
14.4h daylight

June

June is mild with highs of 24°C and lows of 15°C. Light rainfall and mostly sunny skies.

91 Ideal

Comfort

20°
Feels Like Mild
20°C
Temperature
15° 24°
65%
Humidity
Humid

Weather

20 mm
Rainfall
2.1 m/s
Wind
Calm
1.9
UV Index
Very High
15.1h daylight

July

July is mild with highs of 27°C and lows of 18°C. The driest month with just 11 mm and clear sunny skies.

97 Ideal

Comfort

23°
Feels Like Mild
23°C
Temperature
18° 27°
59%
Humidity
Humid

Weather

11 mm
Rainfall
2.3 m/s
Wind
Calm
2.1
UV Index
Extreme
14.8h daylight

August

August is the warmest month with highs of 27°C and lows of 18°C. Light rainfall and mostly sunny skies.

95 Ideal

Comfort

23°
Feels Like Mild
23°C
Temperature
18° 27°
59%
Humidity
Humid

Weather

21 mm
Rainfall
2.2 m/s
Wind
Calm
1.7
UV Index
Very High
13.7h daylight

September

September is mild with highs of 23°C and lows of 16°C. Moderate rainfall (35 mm).

87 Excellent

Comfort

20°
Feels Like Mild
20°C
Temperature
16° 23°
68%
Humidity
Humid

Weather

35 mm
Rainfall
2.1 m/s
Wind
Calm
1.1
UV Index
High
12.3h daylight

October

October is cool with highs of 18°C and lows of 12°C. Moderate rainfall (45 mm) and partly cloudy skies.

73 Very Good

Comfort

15°
Feels Like Cool
15°C
Temperature
12° 18°
78%
Humidity
Very Humid

Weather

45 mm
Rainfall
2.1 m/s
Wind
Calm
0.6
UV Index
Moderate
10.9h daylight

November

November is cool with highs of 13°C and lows of 7°C. The wettest month with 47 mm of rain and partly cloudy skies.

61 Good

Comfort

10°
Feels Like Cool
10°C
Temperature
13°
85%
Humidity
Very Humid

Weather

47 mm
Rainfall
2.2 m/s
Wind
Calm
0.3
UV Index
Low
9.6h daylight

December

December is cold with highs of 10°C and lows of 5°C. Moderate rainfall (37 mm) and partly cloudy skies.

61 Good

Comfort

Feels Like Cold
C
Temperature
10°
87%
Humidity
Very Humid

Weather

37 mm
Rainfall
2.5 m/s
Wind
Calm
0.2
UV Index
Low
9.0h daylight

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