Atsiaman climate
Atsiaman (Ghana) has a tropical savanna (dry winter) climate (Köppen Aw). The average temperature over the year is 26 °C79 °F, and about 1,309 mm52 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Atsiaman climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 3188 | 2374 | 2781 | 251.0 |
| Feb | 3188 | 2576 | 2882 | 512.0 |
| Mar | 3087 | 2577 | 2882 | 1164.6 |
| Apr | 3086 | 2577 | 2781 | 1365.4 |
| May | 2984 | 2577 | 2780 | 1987.8 |
| Jun | 2781 | 2475 | 2678 | 2198.6 |
| Jul | 2780 | 2272 | 2576 | 1024.0 |
| Aug | 2780 | 2271 | 2476 | 491.9 |
| Sep | 2882 | 2272 | 2577 | 1184.6 |
| Oct | 2883 | 2474 | 2679 | 1807.1 |
| Nov | 2984 | 2476 | 2780 | 863.4 |
| Dec | 3087 | 2475 | 2781 | 271.1 |
| Year | 3188 | 2271 | 2679 | 1,30952 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 76% | 39% | 5.0 | 11:49 |
| Feb | 79% | 53% | 5.1 | 11:56 |
| Mar | 82% | 64% | 5.3 | 12:04 |
| Apr | 85% | 68% | 5.3 | 12:14 |
| May | 86% | 70% | 5.0 | 12:23 |
| Jun | 89% | 76% | 4.2 | 12:27 |
| Jul | 89% | 72% | 4.3 | 12:25 |
| Aug | 88% | 70% | 4.4 | 12:18 |
| Sep | 87% | 67% | 4.7 | 12:08 |
| Oct | 87% | 59% | 5.2 | 11:59 |
| Nov | 85% | 49% | 5.2 | 11:51 |
| Dec | 80% | 38% | 5.0 | 11:48 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Atsiaman is like
The warmest month is February, with an average high of 31 °C88 °F and a low of 25 °C76 °F. The coldest is August, when highs average 27 °C80 °F and lows 22 °C71 °F. Seasonal differences are small — just 3.6 °C6.5 °F between the warmest and the coolest month.
It is wet, with about 1,309 mm52 in of precipitation per year. The wettest three-month stretch is April–June, which brings 42% of the annual total. The wettest month is June (219 mm8.6 in), the driest is January (25 mm1.0 in).
Relative humidity ranges from 76% in January to 89% in July. The clearest skies (lowest average cloud amount, 38%) are typical of December. Average wind speed near the ground ranges from 6 km/h (4 mph) in November to 9 km/h (5 mph) in July.
Best time to visit Atsiaman
Based on these averages, the most comfortable months for sightseeing and outdoor activities are December and January and August: average highs of 27 °C80 °F to 31 °C88 °F with 25 mm1.0 in to 49 mm1.9 in of precipitation per month.
The most challenging month is June, which is very wet (219 mm8.6 in) and humid (89% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Atsiaman
- Wetter months (March–June, September and October) — highs 2781 to 30 °C87 °F, lows 2272 to 25 °C77 °F, about 161 mm6.4 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
- Drier months (November–February, July and August) — highs 2780 to 31 °C88 °F, lows 2271 to 25 °C76 °F, about 57 mm2.2 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses.
How Atsiaman compares
Compared with Accra, about 21 km to the southeast, Atsiaman has practically the same average temperature and receives 12% more precipitation (1,309 mm52 in vs 1,167 mm46 in).
Of the 10 places in Ghana covered by World Climates, Atsiaman is the 4th warmest by annual mean temperature and the 6th wettest by annual precipitation. See all of them on the Ghana climate page.
Places in other countries with the most similar temperature and rainfall pattern: Dabou (Ivory Coast, Aw), Abidjan (Ivory Coast, Aw) and Koumassi (Ivory Coast, Aw).
The same NASA POWER grid cell also contains Amanfrom (pop. 119,467). Their long-term averages in this dataset are essentially the same as for Atsiaman, so they do not have separate pages.
Nearby places
- Accra 21 km · 26 °C80 °F · 1,167 mm46 in
- Koforidua 45 km · 26 °C79 °F · 1,162 mm46 in
- Cape Coast 121 km · 26 °C79 °F · 1,407 mm55 in
- Ho 134 km · 26 °C79 °F · 1,140 mm45 in
- Twifu Praso 136 km · 26 °C79 °F · 1,432 mm56 in
- Obuase 158 km · 25 °C78 °F · 1,557 mm61 in
- Lomé 178 km · 27 °C80 °F · 1,098 mm43 in
- Kumasi 181 km · 25 °C78 °F · 1,442 mm57 in
Frequently asked questions
What is the warmest month in Atsiaman?
February is the warmest month in Atsiaman, with an average high of 31 °C (88 °F) and an average low of 25 °C (76 °F).
What is the coldest month in Atsiaman?
August is the coldest month, with an average high of 27 °C (80 °F) and an average low of 22 °C (71 °F).
When does it rain the most in Atsiaman?
June is the wettest month with about 219 mm (8.6 in) of precipitation; January is the driest with about 25 mm (1.0 in).
What is the best time to visit Atsiaman?
Judging by long-term averages, the most comfortable months are December and January and August.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.