Climate averages 1991–2020
Butterworth weather
in May.
A hot, very wet month: the joint 5th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Butterworth: daytime highs average 30.4°C and nights cool to about 24.9°C. By daytime temperature it is the joint 5th warmest of the 12 months.
Expect about 231 mm of rain on roughly 26 days, which makes May a very wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 22 min on an average May day.
The nearest other city in this atlas is Paya Terubong (10 km away). In May its highs average 29.0°C, 1.4°C cooler than Butterworth, with 228 mm of rain.
Among the 72 cities listed in Malaysia, Butterworth ranks joint 13th of 72 for the warmest May highs and joint 62nd of 72 for the driest May (rainfall, lowest first). The mean May high of those 72 cities is 30.1°C; Butterworth is 0.4°C warmer than that mean.
From May to June, average highs stay level at 30.5°C, and monthly rainfall falls from 231 mm to 166 mm.
The annual picture
May in context
Monthly rainfall
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
Butterworth climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.8°C23.4°C | 23.4°C | 96 | 16.0 | 11.812 h |
| February | 30.8°C23.8°C | 23.8°C | 90 | 15.8 | 11.912 h |
| March | 31.2°C24.5°C | 24.5°C | 161 | 22.2 | 12.112 h |
| April | 30.7°C24.8°C | 24.8°C | 204 | 27.6 | 12.212 h |
| May, selected | 30.4°C24.9°C | 24.9°C | 231 | 26.3 | 12.412 h |
| June | 30.5°C24.8°C | 24.8°C | 166 | 20.6 | 12.412 h |
| July | 30.4°C24.5°C | 24.5°C | 173 | 21.0 | 12.412 h |
| August | 30.3°C24.5°C | 24.5°C | 217 | 23.5 | 12.312 h |
| September | 29.7°C24.2°C | 24.2°C | 242 | 25.6 | 12.212 h |
| October | 29.1°C24.1°C | 24.1°C | 334 | 29.0 | 12.012 h |
| November | 29.0°C23.9°C | 23.9°C | 292 | 27.0 | 11.912 h |
| December | 29.1°C23.6°C | 23.6°C | 167 | 20.1 | 11.812 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
- Paya Terubong in MayMalaysia · 10 kmHigh 29.0°C · Low 24.7°C · 228 mm rain
- Bukit Mertajam in MayMalaysia · 12 kmHigh 30.1°C · Low 24.5°C · 221 mm rain
- Kampung Sungai Ara in MayMalaysia · 13 kmHigh 29.7°C · Low 25.2°C · 228 mm rain
- Tasek Glugor in MayMalaysia · 17 kmHigh 30.1°C · Low 24.6°C · 220 mm rain
- Kota Kuala Muda in MayMalaysia · 21 kmHigh 30.3°C · Low 25.3°C · 231 mm rain
- Val Dor in MayMalaysia · 22 kmHigh 30.3°C · Low 24.5°C · 221 mm rain
- Kulim in MayMalaysia · 22 kmHigh 30.0°C · Low 23.9°C · 221 mm rain
- Sungai Petani in MayMalaysia · 31 kmHigh 30.2°C · Low 24.8°C · 215 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 Butterworth) is explained once on the Butterworth year overview and on the Sources, method and limits page.
Kota Kuala Muda lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.