5-day weather forecast Phnom Penh Oct 20, 2026
28°Weather forecast Phnom Penh today Oct 20, 2026: overcast, temperature from 25 °C to 32 °C.
Precipitation probability 71%. Wind up to 4.11 m/s (gusts 7.5 m/s). Air humidity 56–91%, atmospheric pressure 757–761 mm Hg, UV index up to 8.1.
5 days at a glance — tap a day to open it
Sunrise 05:50
Sunset 17:39
Sunset 17:39
Waxing Gibbous77% illuminated
Moonrise 13:46 · Moonset 00:54
Moonrise 13:46 · Moonset 00:54
Chart
Table
Tue, Oct 20, 2026
| Time | Weather | Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index |
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Overcast | 25 °C | 27% | 96% | 89% | 759 mm Hg | SSE 152° 2.61 (7) m/s | 0 |
| 01:00 |  Partly cloudy | 25 °C | 16% | 39% | 88% | 759 mm Hg | S 175° 2 (4.11) m/s | 0 |
| 02:00 | Overcast | 25 °C | 29% | 98% | 90% | 758 mm Hg | S 184° 2.11 (3.31) m/s | 0 |
| 03:00 |  Cloudy | 25 °C | 25% | 78% | 91% | 758 mm Hg | SW 216° 2 (2.61) m/s | 0 |
| 04:00 | Overcast | 25 °C | 28% | 94% | 90% | 758 mm Hg | SSW 209° 1.69 (1.92) m/s | 0 |
| 05:00 | Overcast | 25 °C | 30% | 100% | 90% | 758 mm Hg | SW 214° 1.5 (1.5) m/s | 0 |
| 06:00 |  Overcast | 25 °C | 30% | 100% | 91% | 759 mm Hg | SW 235° 1.69 (1.69) m/s | 0 |
| 07:00 |  Partly cloudy | 26 °C | 17% | 52% | 86% | 760 mm Hg | WSW 239° 1.61 (1.92) m/s | 0.4 |
| 08:00 | Partly cloudy | 27 °C | 14% | 55% | 79% | 760 mm Hg | S 179° 1.69 (2.72) m/s | 1.5 |
| 09:00 | Partly cloudy | 29 °C | 11% | 50% | 74% | 761 mm Hg | SE 143° 2.31 (3.5) m/s | 3.2 |
| 10:00 |  Patchy rain possible | 29 °C | 15% (0.01 mm/hr) | 72% | 74% | 760 mm Hg | SE 142° 2.5 (4.42) m/s | 6.2 |
| 11:00 | Patchy rain possible | 31 °C | 17% (0.02 mm/hr) | 100% | 64% | 760 mm Hg | SSE 150° 3.39 (4) m/s | 8 |
| 12:00 | Patchy rain possible | 31 °C | 16% (0.02 mm/hr) | 100% | 61% | 759 mm Hg | SSE 155° 4.11 (7.11) m/s | 8.1 |
| 13:00 | Overcast | 32 °C | 14% | 100% | 60% | 758 mm Hg | SSE 161° 3.5 (7.5) m/s | 7.9 |
| 14:00 | Partly cloudy | 32 °C | 6% | 42% | 58% | 758 mm Hg | SSE 166° 2.19 (2.31) m/s | 6.3 |
| 15:00 | Patchy rain possible | 32 °C | 9% (0.01 mm/hr) | 70% | 56% | 757 mm Hg | S 171° 1.11 (1.5) m/s | 3.9 |
| 16:00 |  Patchy light drizzle | 32 °C | 23% (0.23 mm/hr) | 73% | 57% | 757 mm Hg | ESE 104° 0.39 (1) m/s | 1.7 |
| 17:00 | Patchy rain possible | 31 °C | 17% (0.07 mm/hr) | 80% | 63% | 757 mm Hg | NE 47° 0.61 (0.89) m/s | 0.4 |
| 18:00 | Light rain shower | 29 °C | 38% (0.6 mm/hr) | 59% | 70% | 758 mm Hg | NW 313° 0.11 (0.5) m/s | 0 |
| 19:00 |  Patchy rain possible | 29 °C | 24% (0.06 mm/hr) | 100% | 73% | 758 mm Hg | SSW 199° 1 (3) m/s | 0 |
| 20:00 | Light rain shower | 28 °C | 67% (1.39 mm/hr) | 99% | 77% | 759 mm Hg | S 189° 2.11 (2.33) m/s | 0 |
| 21:00 | Light rain shower | 28 °C | 71% (1.64 mm/hr) | 100% | 80% | 760 mm Hg | S 190° 2.5 (3.33) m/s | 0 |
| 22:00 | Overcast | 27 °C | 24% | 100% | 81% | 760 mm Hg | SSW 192° 2.61 (4.42) m/s | 0 |
| 23:00 | Overcast | 27 °C | 25% | 100% | 83% | 760 mm Hg | S 183° 2.89 (5.94) m/s | 0 |
Tue, Oct 20, 2026
Frequently asked questions about the 5-day weather in Phnom Penh
What will the weather be like in Phnom Penh over the next 5 days?
Over the next 5 days in Phnom Penh the temperature is expected to range from about 25 to 34 °C. See the detailed hourly forecast for each of the 5 days in the charts above.
On which of the next 5 days will it rain in Phnom Penh?
The chance of rain in Phnom Penh over the next 5 days reaches 84%. Check the 5-day precipitation chart above to see exactly which days and hours bring rain.
How accurate is the 5-day weather forecast for Phnom Penh?
A 5-day forecast is fairly reliable: the first 2–3 days are usually very accurate, while days 4–5 may be refined. The data is updated several times a day, so check back before important plans.
Which of the next 5 days in Phnom Penh will be the warmest and which the coolest?
Over the next 5 days the temperature in Phnom Penh ranges from about 25 to 34 °C. Compare the warmest and coolest day on the temperature chart above.
Will it be windy in Phnom Penh over the next 5 days?
Over the next 5 days the wind in Phnom Penh picks up to 5 m/s. The windiest days are easy to spot on the wind chart above.
Which day of the week in Phnom Penh is best for a walk or a trip?
For a walk or a trip, pick the days with the lowest chance of rain (up to 84%) and light wind — easy to compare on the 5-day charts above.
How can I best use the 5-day forecast for Phnom Penh?
The first 2–3 days are reliable enough for firm decisions, while days 4–5 are a guide that sharpens as they approach. The forecast is updated several times a day, so check again before important plans.
Will I need an umbrella or sunscreen in Phnom Penh this week?
Rain reaches a 84% chance across the next 5 days, so pack something waterproof for the wettest of them — the daily strip above shows which. Today’s UV index peaks at 8.1; sunscreen is worth it from about 3 upwards.
Phnom Penh on the map
Data Sources & Methodology
Our weather forecasts are powered by a professional weather data provider that aggregates data from national weather services, satellite observations, radar networks, and over 80,000 weather stations worldwide. Forecast data is updated multiple times daily. We convert raw data into clear summaries — wind speed in m/s, pressure in mmHg — so you can plan your day with confidence.