0xCarbon
Cardiff · June · warmth

Warmest places to go from Cardiff in June

In June, the warmest well-known place within 15 hours of Cardiff is Aswan, Egypt, averaging 36.2 °C across day and night and 12.5 h sun a day, about 9h 18m each way by air. Without flying, it is Perpignan, France, averaging 23.2 °C across day and night, about 14h 6m each way by train, for about 22× less carbon (46.7 kg CO₂e return against 1,011 kg).

Every city at once, with and without flying: where is hot in June.

The 10 warmest places within 15 hours of Cardiff

Ranked on warmth 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 warmth each extra kilogram buys.

  1. Aswan, Egypt36.2 °C · 12.5 h sun a day · mostly dryair ≈ 9h 18m · 1,011 kg CO₂e return
  2. Luxor, Egypt35.9 °C · 12.7 h sun a day · mostly dryair ≈ 9h · 974 kg CO₂e return
  3. Sharm el-Sheikh, Egypt35.4 °C · 13.0 h sun a day · mostly dry · sea 27.3 °Cair ≈ 8h 54m · 953 kg CO₂e return
  4. Aqaba, Jordan33.2 °C · 12.9 h sun a day · mostly dry · sea 25.9 °Cair ≈ 8h 48m · 931 kg CO₂e return
  5. Sanliurfa, Turkey30.3 °C · 13.6 h sun a day · mostly dryair ≈ 8h 18m · 914 kg CO₂e return
  6. Batman, Turkey28.5 °C · 13.6 h sun a day · mostly dryair ≈ 8h 30m · 877 kg CO₂e return
  7. Nicosia, Cyprus28.4 °C · 13.7 h sun a day · mostly dry · sea 25.0 °Cair ≈ 8h 6m · 859 kg CO₂e return
  8. Marmaris, Turkey27.9 °C · 13.7 h sun a day · mostly dryair ≈ 7h 24m · 743 kg CO₂e return
  9. Famagusta, Cyprus27.3 °C · 13.5 h sun a day · mostly dry · sea 24.9 °Cair ≈ 8h 6m · 870 kg CO₂e return
  10. Kairouan, Tunisia27.2 °C · 11.9 h sun a day · mostly dryair ≈ 6h 12m · 516 kg CO₂e return

Without flying

The warmest places the train reaches within 15 hours. Perpignan is 23.2 °C for 46.7 kg — about 22× less carbon than flying to Aswan.

  1. Perpignan, France23.2 °C · 12.3 h sun a day · mostly dry · sea 20.8 °Crail ≈ 14h 6m · 46.7 kg CO₂e return
  2. Narbonne, France22.4 °C · 12.2 h sun a day · 1.6 mm rain a day · sea 21.0 °Crail ≈ 14h 18m · 45.2 kg CO₂e return
  3. Montpellier, France22.3 °C · 12.5 h sun a day · 2.1 mm rain a dayrail ≈ 12h 30m · 44.4 kg CO₂e return
  4. Avignon, France22.0 °C · 12.6 h sun a day · 2.5 mm rain a dayrail ≈ 11h 48m · 44.1 kg CO₂e return
  5. Turin, Italy20.4 °C · 11.7 h sun a day · 5.0 mm rain a dayrail ≈ 14h 48m · 44.1 kg CO₂e return
  6. Karlsruhe, Germany20.0 °C · 12.6 h sun a day · 2.6 mm rain a dayrail ≈ 13h · 36.7 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 warmest place you can reach from Cardiff in June within 15 hours is Edfu, 36.2 °C, costing 992 kg CO₂e return. The lowest-carbon option is Portsmouth at 13.2 kg — 75× less carbon, for 19.6 degrees less warmth.

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

PortsmouthEdfu
Where they are. Solid lines are rail or ferry, dashed are flights, from Cardiff. Pick one to compare.
Carbon against warmth, June, departing Cardiff. Journeys of up to 15 hours each way.19 destinations. Lowest carbon Portsmouth at 13.2 kilograms and 16.6 °C; best for warmth Edfu at 992 kilograms and 36.2 °C. Portsmouth · 13.2 kgNefta · 541 kgMinya · 898 kgEdfu · 992 kg

By rail or ferry By air

Carbon against warmth, June, departing Cardiff. Journeys of up to 15 hours each way.

What the 15-hour limit costs: at this budget Alzira can only be reached by air — 349 kg CO₂e, in 5h 18m. Allow up to 24 hours and the train does the same journey for 57.5 kg in 21h — 6× less carbon for 15h 42m more travelling.

June from Cardiff — 19 destinations on the frontier, 8 without flying.
DestinationHowCO₂e returnTempSun/dayRain/dayJourney
Portsmouth, United KingdomRail13.2 kg16.6 °C13.7 h1.1 mm3h 54m
Antwerp, BelgiumRail26.3 kg18.0 °C12.2 h2.4 mm8h 36m
Paris, FranceRail27.1 kg18.6 °C12.1 h2.8 mm7h 42m
Angers, FranceRail30.3 kg19.2 °C12.3 h1.9 mm12h 12m
Lyon, FranceRail38.7 kg20.4 °C12.2 h3.0 mm10h 54m
Montélimar, FranceRail42.2 kg21.6 °C12.4 h2.7 mm13h 24m
Montpellier, FranceRail44.4 kg22.3 °C12.5 h2.1 mm12h 30m
Perpignan, FranceRail46.7 kg23.2 °C12.3 h1.0 mm14h 6m
Alzira, SpainAir349 kg24.7 °C12.6 h0.9 mm5h 18m
Andujar, SpainAir376 kg25.7 °C12.6 h0.9 mm5h 30m
Kairouan, TunisiaAir516 kg27.2 °C11.9 h0.6 mm6h 12m
Ar Rudayyif, TunisiaAir530 kg28.6 °C12.4 h0.1 mm6h 18m
Metlaoui, TunisiaAir534 kg29.8 °C12.5 h0.0 mm6h 18m
Nefta, TunisiaAir541 kg31.5 °C12.4 h0.0 mm6h 24m
Minya, EgyptAir898 kg32.9 °C12.9 h0.0 mm8h 36m
Assiut, EgyptAir923 kg33.7 °C12.5 h0.0 mm8h 48m
Sohag, EgyptAir943 kg34.5 °C12.6 h0.0 mm8h 54m
Luxor, EgyptAir974 kg35.9 °C12.7 h0.0 mm9h
Edfu, EgyptAir992 kg36.2 °C12.6 h0.0 mm9h 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 Nefta (541 kg, 31.5 °C) to Minya (898 kg, 32.9 °C) buys 1.4 °C more warmth for an extra 357 kg — 255 kg of CO₂e per degree. That single step is the most expensive warmth on the whole curve.

The pick of them

Portsmouth, United KingdomPortsmouthUnited Kingdom13.2 kg CO₂e return16.6 °C · 13.7 h sun · 3h 54m by railwarm, bright and dryPerpignan, FrancePerpignanFrance46.7 kg CO₂e return23.2 °C · 12.3 h sun · 14h 6m by railwarm, bright and dryEdfu, EgyptEdfuEgypt992 kg CO₂e return36.2 °C · 12.6 h sun · 9h 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 Edfu

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

Search places to stay in Edfu →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 Cardiff

June from elsewhere

Photo credits

Questions

Where is the warmest place to go from Cardiff in June?

Edfu, Egypt, at 36.2 °C. Reaching it emits 992 kg CO₂e return, travelling 9h 12m each way by air (modelled).

Can I get somewhere warm from Cardiff in June without flying?

Yes. Perpignan reaches 23.2 °C and is reachable by rail or ferry in 14h 6m (modelled), emitting 46.7 kg CO₂e return — though Edfu is warmer still, if you fly.

How much carbon does a return trip from Cardiff to Edfu produce?

992 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.