Table 1.

Modelled daily average global radiation for each month Meteonorm data 1986–2005)

Locations	Latitude	Average daily irradiance in W/m2
		Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Yearly Average
Darwin	−12.4	507	485	547	538	538	529	554	591	601	580	583	516	548
Brisbane	−27.4	635	575	551	471	358	309	344	396	497	547	584	609	489
Perth	−31.9	737	668	591	410	330	285	292	392	495	591	692	739	518
Sydney	−33.8	610	562	481	410	303	245	267	335	410	488	514	589	434
Adelaide	−34.9	709	669	550	394	273	222	248	338	449	551	641	691	477
Canberra	−35.3	654	612	528	413	295	227	252	329	419	517	599	657	458
Melbourne	−37.8	604	555	485	345	227	193	211	285	387	464	555	598	408
Hobart	−42.8	568	524	400	286	189	154	179	250	347	446	505	552	366