Diffuse horizontal irradiation, Kaloum

Kaloum, Guinea
2001-2020
Monthly
kWh/m²/day
NASA POWER

Mean: 2.44 kWh/m²/day
Annual total: 890 kWh/m²/yr
Highest: April (2.94)
Lowest: December (2.04)
Year-to-year variability: ± 0.050 (2.0 %)
Values: 240 months

Monthly value
12-month moving average
Period mean

Drag across the chart to zoom, double-click to reset.

Diffuse horizontal irradiation, kWh/m²/day
Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
2020	2.33	2.45	2.50	2.77	2.66	2.67	2.21	2.03	2.59	2.42	1.97	1.84	2.37
2019	2.02	2.33	2.74	2.63	2.68	2.54	2.27	2.13	2.61	2.50	2.15	1.69	2.36
2018	2.26	2.46	2.45	2.81	2.74	2.54	2.22	2.26	2.58	2.49	2.27	1.68	2.40
2017	1.82	2.48	2.54	3.02	2.79	2.44	2.28	2.31	2.52	2.54	2.40	2.14	2.44
2016	2.07	2.84	2.38	2.63	2.63	2.50	2.19	2.23	2.48	2.53	2.27	2.20	2.41
2015	2.38	2.16	2.90	3.10	2.81	2.68	2.27	2.32	2.47	2.60	2.22	2.28	2.52
2014	2.02	2.34	2.78	2.75	2.71	2.59	2.49	2.29	2.47	2.52	2.31	2.07	2.44
2013	2.09	2.24	2.33	2.81	2.65	2.54	2.41	2.16	2.49	2.56	2.17	1.86	2.36
2012	2.11	2.48	3.27	2.91	2.89	2.50	2.14	2.27	2.38	2.41	2.15	1.91	2.45
2011	2.26	2.07	2.54	3.01	2.75	2.61	2.38	2.31	2.44	2.59	2.25	2.13	2.44
2010	2.00	2.32	2.69	3.12	2.78	2.72	2.34	2.25	2.48	2.40	2.13	1.98	2.43
2009	2.12	2.33	2.61	2.98	2.75	2.61	2.34	2.18	2.32	2.42	2.07	2.04	2.40
2008	2.07	2.73	2.86	3.09	2.80	2.57	2.43	2.27	2.55	2.54	2.36	2.10	2.53
2007	2.51	2.23	2.93	2.99	2.81	2.61	2.27	2.20	2.47	2.44	2.24	1.89	2.47
2006	2.09	2.03	2.66	2.80	2.72	2.54	2.41	2.17	2.55	2.49	2.07	1.97	2.38
2005	2.37	2.49	2.66	2.97	2.75	2.31	2.30	2.23	2.51	2.55	2.30	1.86	2.44
2004	2.10	2.63	2.93	3.00	2.68	2.59	2.27	2.33	2.53	2.45	2.18	2.05	2.48
2003	2.16	2.34	2.80	2.80	2.84	2.48	2.22	2.29	2.41	2.49	2.24	2.15	2.43
2002	2.33	2.61	2.61	2.90	2.88	2.49	2.30	2.16	2.48	2.55	2.35	2.10	2.48
2001	2.32	2.62	2.67	3.01	2.73	2.51	2.47	2.23	2.42	2.56	2.23	2.09	2.49
Median	2.11	2.39	2.66	2.94	2.75	2.54	2.29	2.24	2.48	2.51	2.24	2.04
P10	2.01	2.15	2.45	2.74	2.66	2.47	2.21	2.15	2.40	2.42	2.07	1.82
P90	2.37	2.64	2.93	3.09	2.85	2.67	2.43	2.31	2.58	2.57	2.35	2.15
Min.	1.82	2.03	2.33	2.63	2.63	2.31	2.14	2.03	2.32	2.40	1.97	1.68
Max.	2.51	2.84	3.27	3.12	2.89	2.72	2.49	2.33	2.61	2.60	2.40	2.28

CSV file

240 rows, 8 KB. Columns: period, value, unit, confidence level, status.

annee,mois,valeur,unite,niveau_confiance,statut
2001,1,2.3189,kWh/m²/jour,B,brut
2001,2,2.6203,kWh/m²/jour,B,brut
2001,3,2.669,kWh/m²/jour,B,brut

Download the CSV

API

The same series, versioned, with a free key.

curl -H "Authorization: Bearer kuma_votre_cle" \
  "https://api.kumascience.com/v1/series/gin_conakry_dhi_power_2001_2020?format=csv"

Try it in the console

Python

Read the published file directly with pandas.

import pandas as pd

url = "https://kumascience.com/data/guinee/conakry_kaloum/dhi_nasa_power_mensuel_119.csv"
df = pd.read_csv(url)
df.head()

Open the Python workbench

Same variable, other sources

2 series published for this variable in Kaloum. The gap compares period means, which do not always cover the same years.

Source	Period	Step	Mean (kWh/m²/day)	Gap	2.332.44
NASA POWER this record	2001-2020	monthly	2.44	reference
NASA POWER	2021-2025	daily	2.33	−4.5 %

Notes

Source: NASA POWER, Prediction Of Worldwide Energy Resources : Solar and Meteorological Data Archive
Method: Satellite model
Unit: kWh/m²/day
Time step: Monthly
Period: 2001-01-01 - 2020-12-31
Kuma qualification: Acceptable qualification, cross-check series
Source licence: NASA Open Data Policy, domaine public, citation recommandée
Kuma licence: CC-BY 4.0, DOI 10.5281/zenodo.21051755

Cite this series

Kuma Science (2026). Diffuse horizontal irradiation, Kaloum (Guinea), 2001-2020. NASA POWER series, Guinea national energy data reference. DOI 10.5281/zenodo.21051755. https://kumascience.com/en/donnees/gin_conakry_dhi_power_2001_2020

@misc{kuma_gin_conakry_dhi_power_2001_2020,
  author       = {{Kuma Science}},
  title        = {Diffuse horizontal irradiation, Kaloum (Guinea), 2001-2020},
  year         = {2026},
  howpublished = {NASA POWER series},
  doi          = {10.5281/zenodo.21051755},
  url          = {https://kumascience.com/en/donnees/gin_conakry_dhi_power_2001_2020},
  note         = {License CC-BY 4.0}
}

TY  - DATA
AU  - Kuma Science
TI  - Diffuse horizontal irradiation, Kaloum (Guinea), 2001-2020
PY  - 2026
PB  - Kuma Science
DO  - 10.5281/zenodo.21051755
UR  - https://kumascience.com/en/donnees/gin_conakry_dhi_power_2001_2020
N1  - NASA POWER
ER  -

Also cite the primary source, whose licence applies to the published values.

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