The phrase "although it is somewhat" is correct and usable in written English.
It can be used to introduce a contrasting idea or qualification to a statement, often indicating a degree of uncertainty or limitation.
Example: "Although it is somewhat challenging, I believe we can complete the project on time."
Alternatives: "even though it is somewhat" or "despite it being somewhat".
In the child language literature, these at-risk children are often called "late talkers", a term that we will employ here because of its common use, although it is somewhat of a misnomer.
The muscle does not insert broadly on the fascia of the infralabial gland, although it is somewhat tied by its fascia to the dorsal surface of the gland.
Tomographic electron cryomicroscopy and high-resolution scanning electron microscopy on rotary-shadowed specimens have shown that the yeast NPC shares its overall architectural features with those studied in other eukaryotes, although it is somewhat smaller, being ∼100 nm in diameter and ∼40 nm in height as compared with ∼130 nm × ∼80 nm for its vertebrate counterpart (Yang et al. 1998).
Although it is somewhat more coherent and less complex than the other parties' plans it applies to many more people".
But in my view the empirical evidence — although it is somewhat ambiguous — mostly argues against this idea.
I am unsurprised that a Sun journalist secretly taped the meeting with Rupert Murdoch, although it is somewhat strange that it wasn't leaked earlier.
"What's that?" "It's a traffic light," I say although it's somewhat self-explanatory.
The loss of the first toe on the front foot led to the four-toed condition common in the Eocene; the fifth digit persisted, although it was somewhat weak.
What's different about the Freelander is that, although it's somewhat smaller than other Land Rover vehicles about the same size as a Toyota RAV4 inside, but with a bit less cargo capacity it offers the first blend of very serious off-road capability (like the new Jeep Liberty) and strong luxury (like the Lexus RX300) in a single package.
Although it's somewhat fragile (Pete did bang it around some before he tossed it to me), I have been playing the guitar for decades now.
Angkor Wat is unusual among the Angkor temples in that although it was somewhat neglected after the 16th century it was never completely abandoned, its preservation being due in part to the fact that its moat also provided some protection from encroachment by the jungle.
