Banda Aceh, Indonesia climate

BSh Hot semi-arid

Banda Aceh has a remarkably steady tropical climate (Hot semi-arid, Köppen BSh). The hottest month is June with an average daily high near 92°F, while the coldest is December averaging around 73°F at night. Precipitation totals about 23 inches a year and is strongly seasonal — October alone averages 4.1 inches while May barely receives 0.71 inches.

☀️ Summers

Hot

Highs near 92°F in June.

About 177 days a year above 90 °F

❄️ Winters

Mild

Lows near 73°F in December.

🌧️ Rain

Moderate rainfall

About 23 in of rain a year.

Wettest in October

⛅ Sky & trend

Often grey

Overcast skies dominate much of the year.

+0.8 °F vs 50 years ago

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Clear vs cloudy days

Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day counts

Banda Aceh climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	88	89	90	91	92	92	92	92	91	89	88	88
Avg temp (°F)	80	81	82	82	83	83	83	82	82	81	81	80
Avg low (°F)	72	72	73	73	74	73	73	73	73	73	73	73
Precipitation (in)	1.6	3.5	2.4	1.1	0.7	0.9	1.7	1.3	1.1	4.1	2.1	2.5

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	88	89	90	91	92	92
Avg temp (°F)	80	81	82	82	83	83
Avg low (°F)	72	72	73	73	74	73
Precipitation (in)	1.6	3.5	2.4	1.1	0.7	0.9

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	92	92	91	89	88	88
Avg temp (°F)	83	82	82	81	81	80
Avg low (°F)	73	73	73	73	73	73
Precipitation (in)	1.7	1.3	1.1	4.1	2.1	2.5

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	1	2	1	1	1	0.7	0.6	1	1	2	2	2
Days with high ≥ 90°F (days)	8	12	18	19	20	20	20	19	17	12	7	6

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	1	2	1	1	1	0.7
Days with high ≥ 90°F (days)	8	12	18	19	20	20

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	0.6	1	1	2	2	2
Days with high ≥ 90°F (days)	20	19	17	12	7	6

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	76	73	72	78	83	81	82	84	87	89	89	84
Clear days (≤ 30% cloud)	2	2	2	1	0.8	1	1	0.6	0.3	0.2	0.2	0.7
Partly cloudy days (30–70%)	8	8	10	8	6	6	6	5	4	3	3	5
Cloudy days (≥ 70%)	21	18	19	21	24	23	24	25	26	28	27	25
Relative humidity (%)	82	80	78	78	79	78	77	77	78	81	83	84
Wind speed (mph)	8.3	7.3	5.9	5.4	7.3	8.8	9.5	9.4	8.2	7.2	6.5	7.8

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	76	73	72	78	83	81
Clear days (≤ 30% cloud)	2	2	2	1	0.8	1
Partly cloudy days (30–70%)	8	8	10	8	6	6
Cloudy days (≥ 70%)	21	18	19	21	24	23
Relative humidity (%)	82	80	78	78	79	78
Wind speed (mph)	8.3	7.3	5.9	5.4	7.3	8.8

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	82	84	87	89	89	84
Clear days (≤ 30% cloud)	1	0.6	0.3	0.2	0.2	0.7
Partly cloudy days (30–70%)	6	5	4	3	3	5
Cloudy days (≥ 70%)	24	25	26	28	27	25
Relative humidity (%)	77	77	78	81	83	84
Wind speed (mph)	9.5	9.4	8.2	7.2	6.5	7.8

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 26 years of daily observations at Sultan Iskandarmuda, a weather station, about 10 km from the city centre. The underlying daily records come from NOAA's global station network.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →