Prague · June · sunshine

Sunniest places to go from Prague in June

In June, the sunniest well-known place within 15 hours of Prague is Helsinki, Finland, 16.0 h of sun a day and 16.2 °C, about 5h 12m each way by air. Without flying, it is Visby, Sweden, 14.6 h of sun a day, about 14h 42m each way by train, for about 13× less carbon (25.9 kg CO₂e return against 327 kg).

The 10 sunniest places within 15 hours of Prague

Ranked on sunshine in June alone, among well-known places (a Wikivoyage travel guide and at least 40,000 Wikipedia readers a year), one per area and at most three per country. The carbon is shown, not used to choose: the list further down is the other question, how much sunshine each extra kilogram buys.

Helsinki, Finland16.0 h · 16.2 °C · mostly dry · sea 13.5 °Cair ≈ 5h 12m · 327 kg CO₂e return
Oulu, Finland15.9 h · 15.3 °C · 1.9 mm rain a day · sea 15.4 °Cair ≈ 5h 54m · 448 kg CO₂e return
Porvoo, Finland15.9 h · 17.1 °C · mostly dryair ≈ 5h 18m · 338 kg CO₂e return
Luleå, Sweden15.8 h · 15.1 °C · 1.2 mm rain a day · sea 12.6 °Cair ≈ 5h 54m · 448 kg CO₂e return
Tallinn, Estonia15.7 h · 16.4 °C · 2.2 mm rain a day · sea 13.7 °Cair ≈ 5h 6m · 309 kg CO₂e return
Narva, Estonia15.7 h · 16.9 °C · 2.2 mm rain a dayair ≈ 5h 18m · 341 kg CO₂e return
Gävle, Sweden15.5 h · 16.3 °C · 1.8 mm rain a day · sea 12.5 °Cair ≈ 5h 6m · 299 kg CO₂e return
Umeå, Sweden15.3 h · 15.0 °C · 1.5 mm rain a day · sea 10.7 °Cair ≈ 5h 36m · 394 kg CO₂e return
Tartu, Estonia14.9 h · 17.4 °C · 1.4 mm rain a dayair ≈ 5h 6m · 306 kg CO₂e return
Oslo, Norway14.3 h · 16.5 °C · 3.3 mm rain a dayair ≈ 5h · 281 kg CO₂e return

Without flying

The sunniest places the train reaches within 15 hours. Visby is 14.6 h for 25.9 kg — about 13× less carbon than flying to Helsinki.

Visby, Sweden14.6 h · 16.3 °C · 1.2 mm rain a day · sea 13.9 °Crail ≈ 14h 42m · 25.9 kg CO₂e return
Aalborg, Denmark14.3 h · 15.8 °C · 2.4 mm rain a dayrail ≈ 14h · 24.5 kg CO₂e return
Jönköping, Sweden14.2 h · 15.9 °C · 2.8 mm rain a dayrail ≈ 14h 24m · 25.2 kg CO₂e return
Gothenburg, Sweden14.1 h · 15.6 °C · 3.2 mm rain a day · sea 16.2 °Crail ≈ 14h 30m · 25.4 kg CO₂e return
Aarhus, Denmark14.0 h · 15.6 °C · 2.3 mm rain a day · sea 15.6 °Crail ≈ 12h 36m · 21.6 kg CO₂e return
Kalmar, Sweden14.0 h · 16.6 °C · 3.4 mm rain a day · sea 14.6 °Crail ≈ 12h 42m · 21.9 kg CO₂e return

≈ is the model's estimate (air times include getting to and through the airport); ✓ is a rail journey checked against a real timetable, with the date it was checked. Temperatures are historical daily means for 2023–2024, averaged across day and night, so afternoons run warmer.

The low-carbon trade-off

The sunniest place you can reach from Prague in June within 15 hours is Helsinki, 16.0 h, costing 327 kg CO₂e return. The lowest-carbon option is Wałbrzych at 4.5 kg — 73× less carbon, for 3.2 hours less sunshine.

Every destination here is on the efficiency frontier: nowhere else this site covers is both sunnier in June and lower in carbon. Anything a better option beats outright has been left out.

Where they are. Solid lines are rail or ferry, dashed are flights, from Prague. Pick one to compare.

By rail or ferry By air

Carbon against sunshine, June, departing Prague. Journeys of up to 15 hours each way.

What the 15-hour limit costs: at this budget Stockholm can only be reached by air — 265 kg CO₂e, in 4h 54m. Allow up to 24 hours and the train does the same journey for 31.1 kg in 17h 12m — 9× less carbon for 12h 18m more travelling.

June from Prague — 6 destinations on the frontier, 4 without flying.
Destination	How	CO₂e return	Temp	Sun/day	Rain/day	Journey
Wałbrzych, Poland	Rail	4.5 kg	17.1 °C	12.8 h	2.2 mm	4h 12m
Wrzesnia, Poland	Rail	9.8 kg	18.7 °C	13.5 h	2.6 mm	6h 48m
Svendborg, Denmark	Rail	18.0 kg	15.9 °C	14.0 h	1.7 mm	10h 48m
Visby, Sweden	Rail	25.9 kg	16.3 °C	14.6 h	1.2 mm	14h 42m
Stockholm, Sweden	Air	265 kg	16.8 °C	15.1 h	1.9 mm	4h 54m
Helsinki, Finland	Air	327 kg	16.2 °C	16.0 h	1.1 mm	5h 12m

Warm is not the same as pleasant, which is why sunshine and rainfall are shown alongside temperature. All three are ERA5 monthly means for 2023–2024.

Where the curve breaks

The frontier is gentle until it isn't. Going from Visby (25.9 kg, 14.6 h) to Stockholm (265 kg, 15.1 h) buys 0.5 hours more sunshine for an extra 239 kg — 478 kg of CO₂e per hour. That single step is the most expensive sunshine on the whole curve.

The pick of them

WałbrzychPoland4.5 kg CO₂e return17.1 °C · 12.8 h sun · 4h 12m by railwarm overall

VisbySweden25.9 kg CO₂e return16.3 °C · 14.6 h sun · 14h 42m by railwarm overall

HelsinkiFinland327 kg CO₂e return16.2 °C · 16.0 h sun · 5h 12m by airwarm, bright and dry

The same month, asked differently

June answers differently depending on what you are after, and the lists genuinely diverge: the brightest places are not the hottest, and in summer the useful question stops being where is warm at all.

Where to stay in Helsinki

Places to stay in Helsinki, Finland, on a live map. Prices and availability come from Stay22 and its booking partners.

Search places to stay in Helsinki →Opens the booking search in a new tab. Same partners as the map below.

Affiliate disclosure. A booking made through this map may earn 0xCarbon a commission, at no extra cost to you. It changes nothing above it: the emissions figures come from UK Government conversion factors and are computed before anyone is paid anything.See the method.

Other months from Prague

June from elsewhere

Photo credits

Wałbrzych: Jar.ciurus, CC BY-SA 3.0 pl, via Wikimedia Commons
Visby: Żeglarz, Public domain, via Wikimedia Commons
Helsinki: Old Pionear, CC BY-SA 4.0, via Wikimedia Commons
Luleå: Andreas Harnemo, CC BY-SA 3.0, via Wikimedia Commons
Tallinn: Hiiumaamudeliklubi, CC BY-SA 4.0, via Wikimedia Commons
Gävle: I99pema, CC BY-SA 4.0, via Wikimedia Commons
Umeå: Jonipoon, CC BY-SA 4.0, via Wikimedia Commons
Oslo: Jonipoon, CC BY-SA 3.0, via Wikimedia Commons
Jönköping: Citronlemonad, CC0, via Wikimedia Commons
Gothenburg: Bengt Nyman from Vaxholm, Sweden, CC BY 2.0, via Wikimedia Commons
Kalmar: L.G.foto, Kiwijo2000, ginandtonique, Sniper Zeta and Shrek_38 Collage by Moralist., CC BY 3.0, via Wikimedia Commons

Questions

Where is the sunniest place to go from Prague in June?

Helsinki, Finland, at 16.0 h. Reaching it emits 327 kg CO₂e return, travelling 5h 12m each way by air (modelled).

Can I get somewhere sunny from Prague in June without flying?

Yes. Visby reaches 14.6 h and is reachable by rail or ferry in 14h 42m (modelled), emitting 25.9 kg CO₂e return — though Helsinki is sunnier still, if you fly.

How much carbon does a return trip from Prague to Helsinki produce?

327 kg CO₂e for one person, return, by air. That uses the UK Government's 2026 conversion factors, including radiative forcing for flights.

Carbon uses UK Government (DESNZ/DEFRA) 2026 conversion factors applied to great-circle distance, with radiative forcing included for flights. Rail journey times are modelled estimates, not timetabled services. Full method · download the data.