Sunniest places to go from Rome in May
The sunniest place you can reach from Rome in May within 15 hours is Örnsköldsvik at 15.1 h, costing 607 kg CO₂e return. The lowest-carbon option is Grosseto at 4.4 kg — 138× less carbon for 3.9 h less.
Every destination here is on the efficiency frontier: nowhere else in Europe is both sunnier in May and lower in carbon. Anything a better option beats outright has been left out.
By rail or ferry By air
What the 15-hour limit costs: at this budget Gdynia can only be reached by air — 370 kg CO₂e, in 5h 30m. Allow up to 24 hours and the train does the same journey for 43.4 kg in 22h 6m — 9× less carbon for 16h 36m more travelling.
| Destination | How | CO₂e return | Temp | Sun/day | Rain/day | Journey |
|---|---|---|---|---|---|---|
| Grosseto, Italy | Rail | 4.4 kg | 17.6 °C | 11.2 h | 3.4 mm | 4h 6m |
| Zadar, Croatia | Rail | 9.8 kg | 18.1 °C | 11.7 h | 4.4 mm | 6h 30m |
| Barcelona, Spain | Rail | 25.4 kg | 17.2 °C | 12.5 h | 2.0 mm | 13h 48m |
| Tarragona, Spain | Rail | 27.8 kg | 18.3 °C | 12.9 h | 1.4 mm | 14h 54m |
| Gdynia, Poland | Air | 370 kg | 13.9 °C | 13.4 h | 0.6 mm | 5h 30m |
| Karlskrona, Sweden | Air | 403 kg | 13.1 °C | 14.2 h | 0.6 mm | 5h 36m |
| Ventspils, Latvia | Air | 463 kg | 12.7 °C | 14.4 h | 0.7 mm | 6h |
| Örnsköldsvik, Sweden | Air | 607 kg | 9.0 °C | 15.1 h | 0.5 mm | 6h 42m |
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 Tarragona (27.8 kg, 12.9 h) to Gdynia (370 kg, 13.4 h) buys 0.5 hours more sunshine for an extra 342 kg — 685 kg of CO₂e per hour. That single step is the most expensive sunshine on the whole curve.
The pick of them
If you'd rather have heat than sunshine
May answers differently depending on what you're after. The warmest destinations from Rome in May are a different list — hours of sunshine and degrees of warmth come apart, especially early and late in the year.
Where to stay in Örnsköldsvik
Places to stay in Örnsköldsvik, Sweden, on a live map. Prices and availability come from Stay22 and its booking partners.
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 Rome
May from elsewhere
- Amsterdam
- Barcelona
- Berlin
- Birmingham
- Bristol
- Brussels
- Cardiff
- Copenhagen
- Dublin
- Edinburgh
- Frankfurt
- Glasgow
- Leeds
- Lisbon
- Liverpool
- London
- Madrid
- Manchester
- Milan
- Munich
- Newcastle
- Nottingham
- Oslo
- Paris
- Prague
- Rome
- Sheffield
- Southampton
- Stockholm
- Vienna
- Warsaw
- Zurich
Questions
Where is the sunniest place to go from Rome in May?
Örnsköldsvik, Sweden, at 15.1 h. Reaching it emits 607 kg CO₂e return, travelling 6h 42m each way by air.
Can I get somewhere sunny from Rome in May without flying?
Yes. Tarragona reaches 12.9 h and is reachable by rail or ferry in 14h 54m, emitting 27.8 kg CO₂e return — though Örnsköldsvik is sunnier still, if you fly.
How much carbon does a return trip from Rome to Örnsköldsvik produce?
607 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.