Climate averages 1991–2020

Cẩm Phả weather
in May.

A hot, very wet month: the 5th warmest and the 8th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 28.7°C Daytime mean, May

Average low 24.7°C Night-time mean, May

Rainfall 200 mm 18 days with ≥1 mm

Daylight 13 h Sunrise to sunset, per day

May is a hot month in Cẩm Phả: daytime highs average 28.7°C and nights cool to about 24.7°C. By daytime temperature it is the 5th warmest of the 12 months.

Expect about 200 mm of rain on roughly 18 days, which makes May a very wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 07 min on an average May day.

The nearest other city in this atlas is Hạ Long (22 km away). In May its highs average 29.3°C, 0.6°C warmer than Cẩm Phả, with 219 mm of rain.

Among the 136 cities listed in Vietnam, Cẩm Phả ranks 129th of 136 for the warmest May highs and joint 67th of 136 for the driest May (rainfall, lowest first). The mean May high of those 136 cities is 31.2°C; Cẩm Phả is 2.5°C cooler than that mean.

From May to June, average highs rise by 1.6°C to 30.3°C, and monthly rainfall rises from 200 mm to 288 mm.

The annual picture

May in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Cẩm Phả climate table

1991–2020

Monthly climate averages for Cẩm Phả, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January	18.6°C14.6°C	14.6°C	61	11.4	11.011 h
February	19.9°C15.8°C	15.8°C	44	10.7	11.411 h
March	22.6°C18.4°C	18.4°C	64	12.1	12.012 h
April	26.0°C21.8°C	21.8°C	65	10.3	12.613 h
May, selected	28.7°C24.7°C	24.7°C	200	17.5	13.113 h
June	30.3°C26.6°C	26.6°C	288	21.4	13.413 h
July	30.2°C26.6°C	26.6°C	373	23.4	13.313 h
August	30.1°C26.0°C	26.0°C	431	24.4	12.813 h
September	29.3°C25.0°C	25.0°C	296	19.9	12.312 h
October	27.4°C23.0°C	23.0°C	126	11.9	11.712 h
November	24.3°C19.7°C	19.7°C	59	8.9	11.211 h
December	20.3°C15.9°C	15.9°C	48	7.7	10.911 h

Rainfall is the average of the 30 separate monthly totals. A rain 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

May in nearby cities

Distance from Cẩm Phả

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 limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Cẩm Phả) is explained once on the Cẩm Phả year overview and on the Sources, method and limits page.