Map from Google - Faroe_Islands

In the Faroe Islands, autonomous Danish territory, the climate is cold, wet, windy and rainy throughout the year. The influence of the ocean narrows the temperature range both between night and day, and between winter and summer.

In the main city, Torshavn, the average temperature goes from 3.5 °C (38 °F) in February, to 11 °C (52 °F) in August, which is the mildest month. Therefore, the climate is almost subpolar, given the cold summer, even though in winter the average remains above freezing (0 °C or 32 °F).

Precipitation is abundant, since it amounts to 1,300 millimetres (52 inches) per year, with a maximum in autumn and winter, from September to March, when more than 100 mm (4 in) per month fall, and a relative minimum in spring and summer. The least rainy months are May and June, when, however, precipitation is around 55/65 millimetres (2.1/2.5 inches) per month; in the least rainy period, from May to August, it still rains for 12/13 days per month on average.
Here is the average precipitation in Torshavn.
Average precipitation - Torshavn
TorshavnJanFebMarAprMayJunJulAugSepOctNovDecYear
TorshavnJFMAMJJASONDY
Prec. (mm)16011513090655575951201451401351325
Prec.(in)6.34.55.13.52.62.233.74.75.75.55.352.2
Days221721161312131318222122210

The sunshine amount is never good: cloudy skies are the norm, however, spring is the relatively sunniest season. On the other hand, given the high latitude, the days are very long from May to July. In winter, the days are very short, especially from November to January, and the weather is usually bad, so that darkness reigns.
Here are the average temperatures.
Average temperatures - Torshavn
TorshavnJanFebMarAprMayJunJulAugSepOctNovDec
TorshavnJFMAMJJASOND
Min (°C)212357998532
Max (°C)6667911131312976
Min (°F)363436374145484846413736
Max (°F)434343454852555554484543

Winter is not freezing, but wind and moisture increase the feeling of cold. Rain is more frequent that snow even in winter, on the other hand, snowfalls and frosts, usually not intense, are possible for a long period, ie from October to April.
Spring is cold, and the temperature rises very slowly, so that still in May highs are 9 °C (48 °F) on average, but at least the days begin to be very long.
Summer is cold or very cool, with highs around 11/13 °C (52/55 °F). In practice, it never gets hot: the highest recorded temperatures are around 20/22 °C (68/72 °F).

In inland areas, there are hills where the altitude makes snowfall more likely, so that you can see the snow even in summer. It is said that from the top of Slættaratindur, at 880 metres (2,887 feet) above sea level, you can see the Icelandic glacier Vatnajökull.

The wind frequently blows, and is moderate or strong throughout the year, however, storms are most likely from October to March.

Torshavn

The ocean is cold all year round: the sea temperature goes from 6 °C (43 °F) in February and March, to 11 °C (52 °F) in August. In winter, the water temperature is relatively high, given the latitude, due to the Gulf Stream.
Sea temperature - Torshavn
TorshavnJanFebMarAprMayJunJulAugSepOctNovDec
TorshavnJFMAMJJASOND
Sea (°C)766789101110887
Sea (°F)454343454648505250464645

When to go

The best time to visit the Faroes is summer, from June to August, being the least cold and the least rainy. In September, the temperature is as cool as in June, but it rains more often and the days are shorter. In May, the temperature it's colder, but the days are long and the frequency of rainfall is similar to that of summer.

What to pack

In winter: warm clothes, fleece, down jacket, hat, gloves, waterproof wind jacket.
In summer: shirt, sweater, jacket, boots, raincoat or umbrella.