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London · April · warmth

Warmest places to go from London in April

In April, the warmest well-known place within 15 hours of London is Aswan, Egypt, averaging 28.1 °C across day and night and 11.8 h sun a day, about 9h each way by air. Without flying, it is Lleida, Spain, averaging 16.3 °C across day and night, about 14h 18m each way by train, for about 30× less carbon (32.5 kg CO₂e return against 970 kg).

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

The 10 warmest places within 15 hours of London

Ranked on warmth in April 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, Egypt28.1 °C · 11.8 h sun a day · mostly dryair ≈ 9h · 970 kg CO₂e return
  2. Luxor, Egypt27.4 °C · 11.8 h sun a day · mostly dryair ≈ 8h 48m · 932 kg CO₂e return
  3. Sharm el-Sheikh, Egypt27.3 °C · 11.9 h sun a day · mostly dry · sea 23.2 °Cair ≈ 8h 42m · 909 kg CO₂e return
  4. Aqaba, Jordan25.2 °C · 11.7 h sun a day · mostly dry · sea 22.2 °Cair ≈ 8h 30m · 886 kg CO₂e return
  5. Maspalomas, Spain22.1 °C · 11.9 h sun a day · mostly dry · sea 20.5 °Cair ≈ 7h 24m · 740 kg CO₂e return
  6. Marrakesh, Morocco21.7 °C · 11.5 h sun a day · mostly dryair ≈ 6h 36m · 579 kg CO₂e return
  7. Ouarzazate, Morocco20.8 °C · 12.2 h sun a day · mostly dryair ≈ 6h 36m · 593 kg CO₂e return
  8. Agadir, Morocco20.2 °C · 12.1 h sun a day · mostly dry · sea 18.5 °Cair ≈ 6h 48m · 622 kg CO₂e return
  9. Las Palmas de Gran Canaria, Spain20.1 °C · 11.6 h sun a day · mostly dry · sea 20.5 °Cair ≈ 7h 24m · 729 kg CO₂e return
  10. Seville, Spain19.8 °C · 11.8 h sun a day · mostly dryair ≈ 5h 42m · 412 kg CO₂e return

Without flying

The warmest places the train reaches within 15 hours. Lleida is 16.3 °C for 32.5 kg — about 30× less carbon than flying to Aswan.

  1. Lleida, Spain16.3 °C · 11.4 h sun a day · mostly dryrail ≈ 14h 18m · 32.5 kg CO₂e return
  2. Zaragoza, Spain16.1 °C · 11.3 h sun a day · mostly dryrail ≈ 14h · 32.4 kg CO₂e return
  3. Reus, Spain15.5 °C · 11.2 h sun a day · mostly dry · sea 15.4 °Crail ≈ 14h 24m · 34.1 kg CO₂e return
  4. Perpignan, France15.2 °C · 10.4 h sun a day · 1.3 mm rain a day · sea 14.4 °Crail ≈ 10h 48m · 29.7 kg CO₂e return
  5. Barcelona, Spain14.6 °C · 11.1 h sun a day · 2.8 mm rain a day · sea 15.4 °Crail ≈ 12h 30m · 33.6 kg CO₂e return
  6. Nice, France14.4 °C · 11.3 h sun a day · 1.5 mm rain a day · sea 15.4 °Crail ≈ 11h 30m · 30.4 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 London in April within 15 hours is Kom Ombo, 28.3 °C, costing 962 kg CO₂e return. The lowest-carbon option is Calais at 4.5 kg — 214× less carbon, for 18.7 degrees less warmth.

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

CalaisKom Ombo
Where they are. Solid lines are rail or ferry, dashed are flights, from London. Pick one to compare.
Carbon against warmth, April, departing London. Journeys of up to 15 hours each way.16 destinations. Lowest carbon Calais at 4.5 kilograms and 9.6 °C; best for warmth Kom Ombo at 962 kilograms and 28.3 °C. Calais · 4.5 kgZagora · 604 kgSohag · 901 kgKom Ombo · 962 kg

By rail or ferry By air

Carbon against warmth, April, departing London. Journeys of up to 15 hours each way.

What the 15-hour limit costs: at this budget Andujar can only be reached by air — 385 kg CO₂e, in 5h 30m. Allow up to 24 hours and the train does the same journey for 45.1 kg in 20h 12m — 9× less carbon for 14h 42m more travelling.

April from London — 16 destinations on the frontier, 7 without flying.
DestinationHowCO₂e returnTempSun/dayRain/dayJourney
Calais, FranceRail4.5 kg9.6 °C9.0 h2.9 mm5h 24m
St-Malo, FranceRail10.2 kg10.8 °C9.0 h2.2 mm8h 48m
La Rochelle, FranceRail17.7 kg12.1 °C9.8 h2.6 mm9h 36m
Bordeaux, FranceRail21.9 kg12.9 °C9.6 h2.2 mm8h 12m ✓
Montpellier, FranceRail27.4 kg14.1 °C10.5 h1.9 mm9h 54m ✓
Perpignan, FranceRail29.7 kg15.2 °C10.4 h1.3 mm10h 48m
Zaragoza, SpainRail32.4 kg16.1 °C11.3 h0.6 mm14h
Alzira, SpainAir346 kg18.2 °C11.5 h0.1 mm5h 18m
Andujar, SpainAir385 kg18.7 °C11.9 h0.4 mm5h 30m
Palma del Rio, SpainAir399 kg20.0 °C11.9 h0.4 mm5h 36m
Nefta, TunisiaAir519 kg21.4 °C10.7 h0.8 mm6h 18m
Recani, MoroccoAir572 kg23.2 °C11.7 h0.0 mm6h 30m
Zagora, MoroccoAir604 kg24.7 °C12.1 h0.0 mm6h 42m
Sohag, EgyptAir901 kg26.3 °C11.7 h0.0 mm8h 36m
Luxor, EgyptAir932 kg27.4 °C11.8 h0.0 mm8h 48m
Kom Ombo, EgyptAir962 kg28.3 °C11.8 h0.0 mm9h

The flights, in practice

The model measures to the town, not to a runway. For the destinations above reached by air, this is the nearest airport, how far it is, and whether a direct flight from London is listed on the airport's own destination page (researched 2026-09-15; route existence, not availability on a date). "Not checked" means no destination list was read for that airport.

Airports for the air destinations on this frontier, checked 2026-09-15.
DestinationAirportFrom townDirect from LondonOnward
Alzira, SpainValencia VLC45 kmyes LHR, LGW, LTN, STNMetro lines 3 or 5 to Valencia, then Cercanías train to Alzira.
Andujar, SpainCórdoba ODB120 kmnoGround transfer to Córdoba station, then regional train to Andújar.
Palma del Rio, SpainCórdoba ODB55 kmnoGround transfer to Córdoba station, then regional train to Palma del Río.
Nefta, TunisiaTozeur–Nefta TOE25 kmnot checkedTaxi or road transfer from the airport.
Recani, MoroccoOujda Angads OUD65 kmnot checkedRoad transfer from Oujda; scheduled transport not confirmed.
Zagora, MoroccoZagora OZG8 kmnot checkedTaxi to Zagora.
Sohag, EgyptSohag International HMB40 kmnot checkedTaxi or arranged road transfer to Sohag.
Luxor, EgyptLuxor International LXR9 kmyes LGWTaxi or arranged transfer into Luxor.
Kom Ombo, EgyptAswan International ASW45 kmnot checkedRoad or rail transfer north from Aswan.
Sources for this table

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 Zagora (604 kg, 24.7 °C) to Sohag (901 kg, 26.3 °C) buys 1.6 °C more warmth for an extra 297 kg — 186 kg of CO₂e per degree. That single step is the most expensive warmth on the whole curve.

The pick of them

The same month, asked differently

April 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 Kom Ombo

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

Search places to stay in Kom Ombo →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 London

April from elsewhere

Photo credits

Questions

Where is the warmest place to go from London in April?

Kom Ombo, Egypt, at 28.3 °C. Reaching it emits 962 kg CO₂e return, travelling 9h each way by air (modelled).

Can I get somewhere warm from London in April without flying?

Yes. Zaragoza reaches 16.1 °C and is reachable by rail or ferry in 14h (modelled), emitting 32.4 kg CO₂e return — though Kom Ombo is warmer still, if you fly.

How much carbon does a return trip from London to Kom Ombo produce?

962 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.