Climate averages 1991–2020
Helong weather
in October.
A cool, fairly dry month: the 6th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a cool month in Helong: daytime highs average 13.3°C and nights cool to about 2.3°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 39 mm of rain on roughly 7 days, which makes October a fairly dry month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 06 min on an average October day.
The nearest other city in this atlas is Longjing (43 km away). In October its highs average 14.0°C, 0.7°C warmer than Helong, with 36 mm of rain.
Among the 884 cities listed in China, Helong ranks joint 786th of 884 for the warmest October highs and joint 277th of 884 for the driest October (rainfall, lowest first). The mean October high of those 884 cities is 20.4°C; Helong is 7.1°C cooler than that mean.
From October to November, average highs fall by 10.2°C to 3.1°C, and monthly rainfall falls from 39 mm to 28 mm.
The annual picture
October in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Helong climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -7.3°C-19.6°C | -19.6°C | 7.7 | 1.7 | 9.49 h |
| February | -3.2°C-16.6°C | -16.6°C | 14 | 3.5 | 10.511 h |
| March | 3.8°C-8.9°C | -8.9°C | 27 | 6.9 | 11.912 h |
| April | 13.0°C0.3°C | 0.3°C | 54 | 9.9 | 13.313 h |
| May | 19.5°C6.8°C | 6.8°C | 100 | 15.4 | 14.615 h |
| June | 23.7°C12.8°C | 12.8°C | 127 | 16.4 | 15.215 h |
| July | 26.2°C17.1°C | 17.1°C | 177 | 17.2 | 15.015 h |
| August | 25.7°C16.9°C | 16.9°C | 160 | 15.8 | 13.914 h |
| September | 20.9°C10.2°C | 10.2°C | 75 | 9.3 | 12.513 h |
| October, selected | 13.3°C2.3°C | 2.3°C | 39 | 7.4 | 11.111 h |
| November | 3.1°C-6.3°C | -6.3°C | 28 | 5.7 | 9.810 h |
| December | -5.2°C-16.2°C | -16.2°C | 11 | 3.4 | 9.19 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
October in nearby cities
- Longjing in OctoberChina · 43 kmHigh 14.0°C · Low 1.8°C · 36 mm rain
- Yanji in OctoberChina · 57 kmHigh 14.2°C · Low 2.4°C · 38 mm rain
- Tumen in OctoberChina · 84 kmHigh 14.0°C · Low 3.5°C · 38 mm rain
- Chongjin in OctoberNorth Korea · 105 kmHigh 14.6°C · Low 7.6°C · 59 mm rain
- Wangqing in OctoberChina · 106 kmHigh 13.0°C · Low 2.7°C · 39 mm rain
- Ŭndŏk in OctoberNorth Korea · 110 kmHigh 15.2°C · Low 5.0°C · 47 mm rain
- Dunhua in OctoberChina · 111 kmHigh 11.4°C · Low 1.2°C · 43 mm rain
- Hunchun in OctoberChina · 117 kmHigh 14.3°C · Low 2.9°C · 44 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Helong) is explained once on the Helong year overview and on the Sources, method and limits page.