Before You Go

Visas, getting around, and money

The practical stuff every visitor has to figure out once, here it is in one place.

Visas: e-Visa vs. Visa on Arrival

Most nationalities need a visa to enter Cambodia, and you've got two straightforward options. Both cover a 30-day single-entry tourist stay.

OptionCostHow it works
e-Visa~$30 + $6 processing feeApply online in advance at the official evisa.gov.kh site. Takes about 3 business days to process. Print the approval and bring it with your passport, valid at major airports and most (not all) land borders.
Visa on Arrival$30 cash (USD)Available at international airports and most land border crossings. No advance planning needed, but bring a passport photo and expect a slower immigration line than e-Visa holders.

Tip: Only use the official evisa.gov.kh site. Third-party visa sites charge extra fees for the same visa. If you're arriving overland, double-check your specific border crossing accepts e-Visas before relying on one.

Weather & What to Pack

Cambodia is hot for most of the year, this isn't a place-to-place thing, it's the same tropical climate almost everywhere you'll go. What actually changes is the season you're visiting in.

SeasonWhenWhat to expect
Cool & DryNovember–February~22–28°C, low humidity, the most comfortable stretch of the year and peak tourist season, book accommodation ahead.
Hot & DryMarch–MayOften 35–40°C and climbing, the harshest stretch. Midday temple visits get genuinely uncomfortable, sun protection matters most here.
Wet SeasonJune–OctoberHot and humid with regular afternoon downpours, mornings are usually clear. Countryside and temple moats look their greenest, but expect mud and occasional flooding around Tonle Sap.
  • High-SPF sunscreen and a hat, reapply through the day, especially March–May.
  • A reusable water bottle and electrolyte packets, dehydration sneaks up faster than it feels like it should in this heat.
  • Lightweight, breathable clothing that still covers shoulders and knees for temple visits.
  • A light rain jacket or poncho if you're visiting June–October, downpours are usually short but heavy.
  • Insect repellent, particularly for evenings and any time near water (Tonle Sap, riverside towns).

Seasonal patterns shift year to year, treat these as planning guidance, not a guarantee. Regardless of season, plan outdoor temple time for early morning or late afternoon when you can, the midday sun is the real obstacle, not the calendar date.

Must-Have Apps: PassApp & Grab

You don't need to negotiate every tuk-tuk fare by hand anymore, PassApp and Grab cover most of Cambodia's tourist cities for getting around.

PassApp

  • Cambodia's own ride-hailing app
  • Strong tuk-tuk coverage, especially Siem Reap and Phnom Penh
  • Upfront pricing shown before you book
  • Good backup when Grab wait times are long

Grab

  • Region-wide app also used in Vietnam, Thailand, and beyond
  • Cars, motos, and tuk-tuks in Phnom Penh, Siem Reap, and Sihanoukville
  • In-app fare estimates and cashless payment
  • Slightly more features than PassApp, including in-app food delivery

Outside the apps, tuk-tuks and moto taxis are everywhere and still worth using, especially for a full-day hire around the temples. Agree on the price (or the day rate) before you get in if you're not booking through an app.

Roam Cambodia is not affiliated with PassApp, Grab, or any business or brand mentioned on this page. Mentions here are for informational purposes only.

Getting Between Cities

A common route for a first trip is Siem Reap, down to Phnom Penh, then on to the coast at Sihanoukville. Here's roughly how each leg breaks down.

Siem Reap Phnom Penh Sihanoukville ~6 hrs bus / 50 min flight ~2.5 hrs via expressway

Swipe to see all columns →

RouteBusPrivate TaxiFlight
Siem Reap → Phnom Penh~6–7 hrs, $10–15~5–6 hrs, $60–80~50 min, $60–120
Phnom Penh → Sihanoukville~2.5–3 hrs via the PPSHV Expressway, $8–12 (older National Road 4 route: ~5–6 hrs)~2–2.5 hrs via the PPSHV Expressway, $50–70Not typically available on this leg, most travelers fly Siem Reap ↔ Sihanoukville directly instead

Prices and durations are rough estimates and change with traffic, season, and provider, treat them as planning anchors, not quotes. Roam Cambodia is not affiliated with any bus, taxi, or airline operator. More routes (Kampot, the islands) will be added as those destination pages go live.

Currency: USD and Riel

Cambodia runs on two currencies at once, and it trips up a lot of first-time visitors.

  • US Dollars (USD) are used everywhere, for hotels, tours, entry fees, and most restaurant bills. Prices are usually quoted in USD.
  • Cambodian Riel (KHR) is the official currency, and you'll mostly see it as small change for anything under $1, since Cambodia has no US coins.
  • ATMs generally dispense USD, not Riel.
  • The exchange rate hovers around 4,000 Riel to $1, but it fluctuates, so treat that as a rough anchor, not a fixed number.
  • Bring small USD bills. Worn, torn, or heavily marked notes are sometimes refused by vendors and even some banks.

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